body {
    align-content: center;
    color: #949393;
    display: flex;
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.4;
    height: 500px;
}

h3 {
    font-weight: normal;
    line-height: 1.4;
    padding: 0 24px;
    text-align: left;
}

.main_container {
    text-align: center; 
    width: 50%; 
    margin: auto;
}

.error-code-container {
    border-bottom: 5px #949393 solid;
    opacity: .5;
}

.error-code-container img, .error-code-container p {
    display: inline-block;
    margin-right: 12px;
}

p.error-code strong {
    display: block;
    font-size: 5.2rem;
    line-height: 7.2rem;
}

p.error-code span {
    display: block;
    font-size: 1.6rem;
    font-weight: bold;
    text-align: left;
}