style.css

:root{
    --bg: rgb(224, 229, 236);
    --bgHover: hsl(215, 24%, 90%);
    --lightShadow: rgba(255, 255, 255, 0.5);
    --darkShadow: rgba(163, 177, 198, 0.4);
}

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body{
    background-color: var(--bg);
    height: 100vh;
    width: 100vw;
    display: flex;
    justify-content: center;
    align-items: center;
}

#wrapper{
    width: 300px;
    height: 550px;
    margin: auto;
    border-radius: 20px;
    background-color: var(--bg);
    box-shadow: -6px -6px 6px 0px var(--lightShadow), 6px 6px 6px 0px var(--darkShadow);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.logoDiv{
    height: calc(210px + 2em);
    width: 220px;
    border-radius: 15px;
    background-color: var(--bg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.logo{
    background-color: var(--bg);
    box-shadow: inset -6px -6px 6px 0px var(--lightShadow), inset 6px 6px 6px 0px var(--darkShadow);
    height: 150px;
    width: 150px;
    border-radius: 50%;
    margin-bottom: 15px;
}
h3{
    margin-top: -10px;
    color: #4f4f51;
    font-size: 1.5em;
}

ul{
    width: 250px;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
}
li{
    list-style: none;
}
.link{
    border-radius: 15px;
    padding: 1em;
    margin-top: 25px;
    text-align: center;
    font-weight: 500;
    box-shadow: -6px -6px 6px 0px var(--lightShadow), 6px 6px 6px 0px var(--darkShadow);
}
.linksList:last-child{
    margin-bottom: 20px;
}
.link:hover{
    box-shadow: inset -6px -6px 6px 0px var(--lightShadow), inset 6px 6px 6px 0px var(--darkShadow);
    transform: translateY(2px);
}
a{
    text-decoration: none;
}
a:link, a:visited, a:active, a:focus{
    color: #4f4f51;
}


.when{
    text-align: center;
    font-size: 0.75em;
    font-weight: 400;
}
#button3:hover{
    box-shadow: -6px -6px 6px 0px var(--lightShadow), 6px 6px 6px 0px var(--darkShadow);
    transform: translateY(0);
    cursor: default;
}