html {
    margin: 0;
    padding: 0;
    min-height: 100%;
}

body {
    margin: 0;
    padding: 0;
    min-height: 100%;
    background-image: url('../images/bg-pattern.gif');
    background-repeat: no-repeat;
    background-position: 50% 50%;
    font-family: 'Varela Round', sans-serif;
}

.container {
    max-width: 500px;
    box-sizing: border-box;
    padding: 50px 15px 15px 15px;
    margin: 0 auto;
}

.links {
    margin-top: 50px;
}

.btn {
    display: block;
    padding: 25px 12px;
    margin-bottom: 0;
    font-size: 16px;
    font-weight: 400;
    line-height: 18px;
    font-weight: bold;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    background-image: none;
    border-radius: 40px;
    background-color: black;
    color: white;
    width: 100%;
    text-decoration: none;
    box-sizing: border-box;
}

.android {
    background-image: url('../images/android.png');
    background-repeat: no-repeat;
    background-position: 20px 13px;
}

.ios {
    background-image: url('../images/ios.png');
    background-repeat: no-repeat;
    background-position: 20px 13px;
}

.amazon {
    background-image: url('../images/amazon.png');
    background-repeat: no-repeat;
    background-position: 20px 18px;
}

.facebook {
    background-image: url('../images/facebook.png');
    background-repeat: no-repeat;
    background-position: 20px 15px;
}

.img-responsive {
    width: 100% \9;
    max-width: 100%;
    height: auto;
    display: block;
}

.img-center {
    margin: 0 auto;

}

.text-center {
    text-align: center;
}

@media screen and (min-width: 1200px) {
    body {
        -webkit-background-size: cover;
        -moz-background-size: cover;
        -o-background-size: cover;
        background-size: cover;
    }

    .container {
        padding-top: 100px;
    }
    
    .android {
        background-position: 30px 15px;
    } 
    
    .ios {
        background-position: 30px 15px;
    }
    
    .amazon {
        background-position: 30px 20px;
    }
    
    .facebook {
       background-position: 30px 20px;
    }
    
    .btn {
        font-size: 30px;
        line-height: 32px;
    }
}