.masthead.is-intro {
    position: relative;
    background-color: var(--bs-dark);
}

.masthead.is-intro .masthead-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.6;
}

.masthead.is-intro .container {
    position: relative;
}

.masthead.is-intro .main_btn {
    position: relative;
    top: 7rem;
}

.masthead.is-intro .btn.main_btn {
    transform: scale(1, 1);
    opacity: 1;
    transition: .5s;
}
.masthead.is-intro .btn.main_btn:hover {
    background-color: #5eb5b0;
    border-color: #5eb5b0;
    opacity: 0.8;
    transform: scale(1.1, 1.1);
}
.portfolio-caption {
    cursor: pointer;
}