* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}

body {
    background-color: #000000;
    color: #4d4d4d;
    line-height: 1.6;
}

header {
    display: flex;
    justify-items: center;
    align-items: center;
    flex-direction: column;
    width: 100%;
    height: 100vh;
}

.contenedor {
    width: 600px;
    text-align: center;
    margin-top: 20%;
}

a {
    color: rgb(102, 101, 101);
}

img {
    width: 100px;
}