gitnet-project/style.css

body, .container-fluid, *[class*="col-md-"] {
    margin: 0;
    padding: 0;
}

.row {
    margin-left: 0;
    margin-right: 0;
}

#home {
    min-height: calc(100vh);
    background: url('img/intro-bg.jpg') center center;
    background-size: 100%;
    text-align: center;
    color: #fff;
}

img {
    max-width: 100%;
}

h1 span {
    background: #333;
    padding: 3px 8px;
    color: #fff;
    font-family: Times;
}

#about {
    padding-top: 30px;
}

p {
    color: #333;
    padding: 10px 20% 10px 20%;
    font-size: 20px;
    font-family: monospace;
    text-align: center;
}

.btn {
    background: transparent;
    border: 3px solid #d45500;
    color: #d45500;
    font-size: 30px;
}

a {
    color: #d45500;
    border-bottom: 2px solid #d45500;
}

a:hover {
    background: #d45500;
    color: #fff;
}

.table-container {
    display: table;
    height: 100%;
}

.table-row {
    display: table-row;
}

.table-cell {
    display: table-cell;
    vertical-align: middle;
}