* {
    font: 500 16px (Arial, Helvetica, sans-serif);  
    margin: 0;
    padding: 0;
}

body {
    background: rgba(4, 238, 63, 0.479);
}

main {
    width: 700px;
    margin: auto;
    margin-top: 2vh;
    background-color: rgb(179, 166, 166);

    box-shadow: 0.2px 3px 3px 5px rgba(0, 0, 0, 0.39);
    border-radius: 20px;

}

header {
    padding: 20px 20px 20px;
    background-color: rgb(148, 141, 141);
    border-radius: 20px 20px 15px 15px;

    display: flex;
    align-items: center;
    justify-content: space-between;
}

header h1 {
    font-size: 50px;
}

header a {
    transition: 0.4s;
    border-radius: 10%;
    margin-right: 150px;
}

header a:hover {
    background-color: rgb(151, 161, 151);
    cursor: pointer;
}

article.cursos {
    border-radius: 10px;
    margin-top: 20px;
    padding: 30px;
    background-color: #70e659;
    font-size: 20px;
}