body {
    color: #333;
    font-family: 'Open Sans', sans-serif;
    margin: 0;
    padding: 0;
}

#main_content {
	margin: 40px;
}

h1 {
 	font-size: 30px;
 	margin-bottom: 40px;
}

.button_container {
    border: 1px solid #ddd;
    margin: 0 10px 10px 0;
    padding: 20px;
    width: 300px;
    height: 300px;
    float: left;
    overflow: hidden;
    box-sizing: border-box;
    text-align: center;
}

a#btn_spotify {
    display: inline-block;
    height: 50px;
    box-sizing: border-box;
    border-radius: 25px;
    margin: auto;
    margin-top: 100px;
    padding: 10px 40px 0 40px;
    background-color: #2ebd59;
    border: 2px solid #2ebd59;
    color: #fff;
    font-size: 20px;
    font-family: 'Montserrat', sans-serif;
    font-weight: bold;
    text-decoration: none;
}

a#btn_spotify:hover {
    background-color: #fff;
    border: 2px solid #000;
    color: #000;
}

a#btn_twitter {
    display: inline-block;
    height: 40px;
    box-sizing: border-box;
    border-radius: 4px;
    margin: auto;
    margin-top: 105px;
    padding: 10px 30px 0 30px;
    background-color: #56cdf1;
    color: #fff;
    font-size: 18px;
    font-family: 'Arial', sans-serif;
    font-weight: bold;
    text-decoration: none;
}

a#btn_twitter:hover {
    /* Permalink - use to edit and share this gradient: http://colorzilla.com/gradient-editor/#2ebfec+0,28a5cb+100 */
    background: #2ebfec; /* Old browsers */
    background: -moz-linear-gradient(top,  #2ebfec 0%, #28a5cb 100%); /* FF3.6+ */
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#2ebfec), color-stop(100%,#28a5cb)); /* Chrome,Safari4+ */
    background: -webkit-linear-gradient(top,  #2ebfec 0%,#28a5cb 100%); /* Chrome10+,Safari5.1+ */
    background: -o-linear-gradient(top,  #2ebfec 0%,#28a5cb 100%); /* Opera 11.10+ */
    background: -ms-linear-gradient(top,  #2ebfec 0%,#28a5cb 100%); /* IE10+ */
    background: linear-gradient(to bottom,  #2ebfec 0%,#28a5cb 100%); /* W3C */
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#2ebfec', endColorstr='#28a5cb',GradientType=0 ); /* IE6-9 */
}


a#btn_amazon {
    display: block;
    width: 100px;
    height: 100px;
    box-sizing: border-box;
    border-radius: 50px;
    margin: auto;
    margin-top: 75px;
    padding-top: 8px;
    background-color: #232f3e;
    color: #fff;
    text-align: center;
    font-size: 60px;
}

a#btn_amazon:hover {
    background-color: #fc9a18;
}


a#btn_indiegogo {
    display: inline-block;
    margin:auto;
    margin-top: 100px;
    padding: 8px 16px;
    background-color: #fff;
    color: #eb1478;
    font-family: 'Ubuntu', sans-serif;
    font-size: 30px;
    font-weight: bold;
    text-transform: uppercase;
    text-decoration: none;
    letter-spacing: -2px;
}

a#btn_indiegogo:hover {
    color: #fff;
    background-color: #eb1478;
}

a#btn_cocacola img{
    margin-top: 20%;
    width: 130px;
}

a#btn_cocacola img:active {
    transform: translateY(5px);
}

a#btn_apple {
    display: block;
    margin:auto;
    margin-top: 50px;
    text-align: center;
    font-size: 100px;
    opacity: 0.6;
    color: slategrey;
}

a#btn_apple:hover {
   opacity: 1
}

a#btn_ofa {
    display: inline-block;
    height: 100px;
    box-sizing: border-box;
    border-radius: 10px;
    padding: 4px 10px 10px;
    background-color: #1E90FF;
    margin: auto;
    margin-top: 30%;
    font-family: 'open sans' sans-serif;
    font-weight: 800;
    font-size: 70px;
    text-decoration: none;
    color: white;
    text-align: center;
}

a#btn_ofa:hover {
    background-color: white;
    color: #1E90FF;
}

a#btn_craigslist {
    display: inline-block;
    font-family: 'times new roman';
    color: #0000CD;
    text-align: center;
    font-size: 50px;
    margin: auto;
    margin-top: 40%;
    text-decoration: none;
}

a#btn_craigslist:hover {
    text-decoration: underline;
    color: #191970;
}

a#btn_foreflight {
    display: inline-block;
    white-space: nowrap;
    box-sizing: border-box;
    border-radius: 3px;
    padding:10px 30px 10px;
    background-color: #0A4459;
    margin: auto;
    margin-top: 40%;
    font-family: 'open sans' sans-serif;
    font-weight: bold;
    font-size: 30px; 
    letter-spacing: 2px;
    text-decoration: none;
    color: white;
    transition: 0.5s;
}

a#btn_foreflight:hover {
    background: url(https://www.freeiconspng.com/uploads/plane-icon-png-images--pictures--becuo-8.png) no-repeat;
    background-color: white;
    margin-top: 40%;
    background-size: 150px;
    background-position: center;
    color: orange;
}

a#btn_fitbit {
    display:inline-block;
    margin:auto;
    box-sizing: border-box;
    border-radius: 90px;
    padding:0px 1px 1px;
    background-color: white;
    border: 5px solid white;
    margin-top: 25%;
}
a#btn_fitbit img{
    margin-top: 20%; 
    width: 200px;
    padding-left: 10px;
}

a#btn_fitbit:hover {
    background-color: black;
    border: 5px solid black;
    transform: skewY(30deg);
}

a#btn_mk {
    display: inline-block;
    white-space: nowrap;
    margin-top: 40%;
    font-family: helvetica;
    font-size: 30px;
    font-weight: bold;
    text-align: center;
    text-decoration: none;
    color: black;
}

a#btn_mk:hover {
    text-transform: lowercase;
}

a#btn_nike {
    display: inline-block;
    font-family: 'futura' sans-serif;
    font-weight: 800;
    font-style: oblique;
    font-size: 60px;
    color: black;
    letter-spacing: -4px;
    transform: scaleY(1.25);
    text-decoration: none;
    text-align: center;
    margin: auto;
    margin-top: 30%;
    margin-right: 10%;
}

a#btn_nike:hover {
    background: url(https://upload.wikimedia.org/wikipedia/commons/thumb/a/a6/Logo_NIKE.svg/320px-Logo_NIKE.svg.png) no-repeat;
    margin-top: 30%;
    background-size: 50px;
    background-position: top;
    color: orange;

}

a#btn_lyft img{
    padding-top: 90px;
    padding-left: 10px;
    width: 100px;
    transition: transform 1.5s;
}

a#btn_lyft img:hover {
    transform: scale(1.25);
    filter: brightness(80%);
}

a#btn_ideo img {
    width: 50%;
    margin-top: 40%;
    transition: transform 2s;
}

a#btn_ideo img:hover {
    transform: scale(2)
}

a#btn_instagram {
    display: inline-block;
    margin:auto;
    margin-top: 50px;
    text-align: center;
    font-size: 100px;
    opacity: 1;
    color:white;
    box-sizing: border-box;
    border-color: black;
    padding: 3px 30px 30px;
    border-radius: 20px;
    background-color: #F181F9;
    height: 60%;
    transition: transform 1.5s;
}

a#btn_instagram:hover {
    transform: scale(1.5);
    background: 
        linear-gradient(
        45deg, 
        #F3E51C, 
        #F31C1C,
        #E51CF3
        );  
}

a#btn_fb {
    display: inline-block;
    margin:auto;
    margin-top: 50px;
    text-align: center;
    font-size: 100px;
    color: #0D5789;
    box-sizing: border-box;
    padding: 5px 10px 10px;
    border-radius: 20px;
    background-color: white;
    width: 140px;
}

a#btn_fb:hover {
    color: white;
    background-color:#0D5789;
}

a#btn_bissinger {
    display: inline-block;
    margin: auto;
    margin-top: 30%;
    font-family: 'Pirata One', cursive;
    font-size: 50px;
    text-decoration: none;
    text-align: center;
    letter-spacing: 1px;
    color: black;
    box-sizing: border-box;
    padding: 10px 20px 10px;
    border-radius: 60%;
    border: 3px solid black;
}

a#btn_bissinger:hover {
    background: black;
    color:white;
}

a#btn_tesla img {
    padding-top: 50px;
    width: 110px;
    filter: brightness(0%);
    transition: transform 1s;
}

a#btn_tesla img:hover {
    filter: brightness(80%);
    transform: scale(1.1);
}

a#btn_ibm img {
    padding-top: 90px;
    width: 130px;
}

a#btn_ibm:hover img {
    filter: brightness(0%);
}

a#btn_ibm img:active {
    transform: translateY(-10px);
}

a#btn_moo {
    display: inline-block;
    font-family: 'Raleway', sans-serif;
    color: #268774;
    font-size: 70px;
    font-weight: bolder;
    text-align: center;
    text-decoration: none;
    margin-top: 30%;
}

a#btn_moo:hover {
    font-style: oblique;
    font-weight: lighter;
}

a#btn_electra {
    display: inline-block;
    box-sizing: border-box;
    border-radius: 5px;
    padding: 5px 20px 10px;
    background-color: #13D6DC;
    font-family: 'Sonsie One', cursive;
    font-size: 35px;
    font-weight: lighter;
    font-style: oblique;
    color: white;
    text-decoration: none;
    margin-top: 100px;
    transition: transform 1s;
}

a#btn_electra:hover {
    transform: scale(1.25);
    background-color: white;
    color: #13D6DC;
}

a#btn_ny img {
    margin-top: 120px; 
    width: 200px;
}

a#btn_ny img:hover {
    transform: translateY(-15px);
}

a#btn_oldnavy {
    display: inline-block;
    margin:auto;
    margin-top: 90px;
    border-radius: 50%;
    padding: 15px 20px 20px;
    background-color: #145383;
    color: white;
    font-family: 'open sans' sans-serif;
    font-size: 35px;
    font-weight: bold;
    text-decoration: none;
    letter-spacing: 0px;
}

a#btn_oldnavy:hover {
    font-weight: lighter;
    font-style: italic;
    text-transform: lowercase;
}

a#btn_hsn {
    display: block;
    width: 120px;
    height: 120px;
    box-sizing: border-box;
    border-radius: 60px;
    margin: auto;
    margin-top: 75px;
    padding-top: 25px;
    background-color: #2883D2;
    color: white;
    text-align: center;
    text-decoration: none;
    font-size: 50px;
}

a#btn_hsn:hover {
    background-color: white;
    color: #2883D2;
    -webkit-box-shadow: 0px 10px 5px 0px rgba(50, 50, 50, 0.75);
    -moz-box-shadow:    0px 10px 5px 0px rgba(50, 50, 50, 0.75);
    box-shadow:         0px 10px 5px 0px rgba(50, 50, 50, 0.75);
}