* {
    box-sizing: border-box;
}

body {
    font-family: Roboto;
    padding: 20px;
    background: #f1f1f1;
}

.header {
    padding: 30px;
    font-size: 40px;
    text-align: center;
    background: white;
}

.row {
    display: table;
}

.leftcolumn {   
    float: left;
    width: 75%;
}

.rightcolumn {
    float: left;
    width: 25%;
    padding-left: 20px;
}

.card {
     background-color: white;
     padding: 20px;
     margin-top: 20px;
}

.card:hover {
     border: 2px solid black;
}

.img {
    background-color: #aaa;
    padding: 20px;
    background-size: cover;
    background-position: bottom;
}

i {
    font-size: 30px !important; 
    padding-right: 15px;
}

a {
    text-decoration: none;
    color: black;
}

.footer {
    padding: 20px;
    text-align: center;
    background: #ddd;
    margin-top: 20px;
}
.modalDialog{
    position: fixed;
    top: 0;
    right:0;
    bottom: 0;
    left: 0;
    background: rgba(0, 0, 0, 0.8);
    display: none;
}
.modalDialog:target{
    display: block;
}
.modalDialog > div{
    width: 400px;
    position: relative;
    margin: 10% auto;
    padding: 5px 20px 13px 20px;
    border-radius: 10px;
    background: #f3f3f3;
}
.close:hover{
    background: #fed138;
}
.img_About{
    background-image: url(519dfe15d4050b5ae51b1ae0fc3f39c3.jpg);
    background-size: cover;
    width: 100px;
}