body {
    color:black;
    min-height: 400px;
    height: 100vh;
    background: url(./../images/bg_texture4.jpg);
}
h2 {
    padding: 10px 0 20px 0;
}
.main-content {
    display: block;
    text-align: center;
}
.main-content > div {
    display: block; 
    padding-top: 35px;
}
.tejido {
    background-image: url('./../images/tejido_bar.jpg'); 
    background-size: 100% 100%;
    max-width: 30px;
}
.btn a {
    color: white;
}