.custom-navbar .navbar-brand {
    display: block;
}
.custom-navbar .nav li a{
    color: initial;
}

#portfolio-content {
    width: 100%;
    padding-top: 78px;
    min-height: calc(100vh - 98px - 78px);
}

.portfolio-header {
    background: var(--primary-color);
    padding: 30px 0 50px 0;
    color: #ffffff;
    text-align: center;
}
.portfolio-header h3 {
    font-size: 35px;
}
.portfolio-header .portfolio-intro {
    color: #ffffff;
    font-size: 16px;
    line-height: 36px;
    max-width: 1600px;
    margin-top: 20px;
}

.portfolio-main {
    width: 100%;
    background: #ffffff;
    padding: 15px;
}
.portfolio-article p.article-img {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}
.portfolio-article p.article-img img {
    width: 100%;
}

@media screen and (max-width: 767px) {
    #portfolio-content {
        padding-top: 50px;
    }
    .portfolio-main {
        padding: 15px 0;
    }

}