.header {
    position: relative;
    top: 0;
    left: 0;
    width: 100%;
    height: 70px;
    background-color: #13334C;
}

.content_large {
    height: 400px;
    margin-top: 20px;
    margin-bottom: 10px;
    background-color: #13334C;
}

.content_small {
    height: 200px;
    margin-top: 10px;
    margin-bottom: 20px;
}

.col {
    background-color: #13334C;
}

.margin-top {
    margin-top: 50px;
}

.margin-bottom {
    margin-bottom: 50px;
}