* {
    box-sizing: border-box;
    margin: 0;
}

body {
    background-color: rgb(22, 24, 49);
    color:azure;
}

header {
    text-align: center;
    margin-bottom: 50px;
}
header h1 {
    margin-top: 20px;
}

.portrait {
    width: 200px;
    margin: 50px;
    border-radius: 50%;
    border: 2px solid rgb(89, 9, 89);
}
.who {
    display: flex;
    flex-wrap: wrap;
}
.list {
    margin-top: 50px;
    margin-left: 5%;
    line-height: 2rem;
    font-size: large;
}
.introduction {
    margin: 50px 5%;
    line-height: 1.5rem;
    font-size: large;
}
.portfolio h2 {
    text-align: center;
    margin-top: 50px;
    margin-bottom: 50px;
}
.portfolioitems {
    display: flex;
    flex-wrap: wrap;
    margin-left: 5%;
}
.portfolioitem {
    width: 300px;
    border: 2px solid rgb(89, 9, 89);
    border-radius: 10px;
    padding: 10px;
    margin: 2%;
    background-color: rgb(59, 58, 58);
}
.portfolioitem img {
    width: 100%;
    display: block;
    margin:0;
}
.portfolioitem h3 {
    margin: 10px;
}
footer {
    margin-top: 50px;
    margin-bottom: 10px;
    text-align: center;
}