.bg-light-blue {
    background-color: #BBD6EE;
}

.bg-dark-grey {
    background-color: #4D4949;
}

.white {
    color: white;
}

.center-text {
    text-align: center;
}

.btn-down {
    width: 5rem;
    height: 5rem;
    border-radius: 100%;
    cursor: pointer;
}

.btn-up {
    color: white;
    position: fixed;
    left: calc(97% - 3rem);
    top: calc(97% - 3rem); 
    width: 3rem;
    height: 3rem;
    border-radius: 100%;
    cursor: pointer;
    z-index: 99;
    text-align: center;
    text-decoration: none;
}

.btn-up:focus, .btn-up:active {
    outline: none !important;
    box-shadow: none !important;
}

#about h2 {
    text-align: center;
}

#contact h2 {
    text-align: center;
}

footer .designed-by {
    color: white;
    text-decoration: none;
    border-bottom: 1px dotted;
}

footer .designed-by:hover {
    color: #BBD6EE;
    text-decoration: none;
}