.header{
    height: 40%;
    width: 100%;
    background-image: 
    linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.8)),
    url(/building6.jpg);
    background-size: cover;
    background-position: center;
    padding: 60px;
    color: rgb(255, 255, 255);
    font-family: Roboto;
    margin-bottom: 50px;
}

.column-element{
    border: 3px solid aliceblue;
    border-radius: 10px;
    background-color: aliceblue;
    padding-top: 40px;
    padding-bottom: 40px;
    transition: all 0.3s ease;
    box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.1);
}
.column-element:hover{
    border:3px solid #007bff;
    transform: translateY(-5px);
    box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.2);
}