*{
    margin: 0;
    padding: 0;
}

.banner{
    width: 100%;
    height: 100vh;
    background-image: url(construction.jpg);
    background-size: cover;
    background-position: center;
}

.mail a{
    font-size: 20px;
    font-weight: 600;
    color: #45446c;
   font-family: sans-serif;
}

.mail a:hover{
    text-decoration: none;
}