style.css

* {
    font-family: Arial, Helvetica, sans-serif;
    margin: 0px;
    font-style: normal;
    font-size: 18px;
    font-weight: normal;
    text-decoration: none;
    box-sizing: border-box
}

.custom-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 30px;
    margin: 0;
}

/*about.html*/
#about-me-container, #about-plan-container, #about-anime-container {
    height: 600px;
}

#about-me-container p, #about-plan-container p, #about-anime-container p {
    font-size: 40px;
    text-align: center;
    max-width: 400px;
}

body {
    background-image: url(../images/background/background.jpg);
}

#about-me-container {
    background-color: #F8FE1E;
}

#about-plan-container {
    background-color: #A7F816;
}

#about-anime-container {
    background-color: #65F2FF;
}