bigredbutton/css/title.css

@import url('https://fonts.googleapis.com/css?family=Poppins:200,300,400,500,600,700,800,900&display=swap');
*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
    text-align: center;
    user-select: none;
    overflow: hidden;
}
body{
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}
header{
    position: absolute;
    display: flex;
    justify-content: center;
    align-items: center;
    top: 0;
    width: 350px;
    height: 5rem;
    background: #480373;
    color: #fff;
    border-radius: 0 0 2rem 2rem;
    box-shadow: 0 0 50px 10px #fff;
}
h3{
    position: absolute;
    margin-bottom: 50vh;
}
img{
    width: 300px;
    cursor: pointer;
    border-radius: 50%;
}
#jonathan{
    z-index: -36;
    position: absolute;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, #6F2DA8 0%, transparent 100%);
}
footer{
    position: absolute;
    bottom: 0;
}
footer a{
    color: #ff0;
}
/* Social */
.socmenu{
    position: absolute;
    left: -45px;
    bottom: -45px;
    width: 220px;
    height: 220px;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 50000;
    transition: .5s;
}
.socmenu.active{
    bottom: 0;
    transition: .5s;
}
.socmenu .toggle{
    position: relative;
    width: 100px;
    height: 100px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 50%;
    box-shadow: 
        0 25px 15px rgba(0,0,0,0.25),
        0 25px 20px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
    filter: drop-shadow(0 0 10px rgba(0,0,0,.75));
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    font-size: 3em;
    color: #fff;
    z-index: 1000000;
}
.socmenu .toggle svg{
    position: absolute;
    filter: drop-shadow(0 0 10px rgba(0,0,0,.75));
    opacity: 0;
    transition: 0.5s; 
}
.socmenu .toggle svg{transition: 0.5s;}
.socmenu .toggle svg:nth-child(1){opacity:1;transform:rotate(360deg);}
.socmenu.active .toggle svg:nth-child(1){opacity:0;transform:rotate(0deg);}
.socmenu .toggle svg:nth-child(2){opacity:0;transform:rotate(0deg);}
.socmenu.active .toggle svg:nth-child(2){opacity:1;transform:rotate(360deg);}
.socmenu li{
    position: absolute;
    left: 0;
    list-style: none;
    transform-origin: 110px;
    transition: 0.5s;
    transition-delay: calc(0.05s*var(--i));
    transform: rotate(calc(360deg/4*var(--i)));
    scale: 0;
    z-index: 1;
    border-radius: 50%;
    overflow: hidden;
}
.socmenu li::before{
    content: '';
    position: absolute;
    top: 0;
    left: -30px;
    width: 20px;
    height: 100%;
    background: #fff;
    z-index: 10;
    transform: skewX(325deg) translateX(0);
    box-shadow: -5px 0 0 #fff5;
    transition: 0.5s;
}
.socmenu li:hover::before{
    transform: skewX(325deg) translateX(180px);
    box-shadow: -50px 0 0 #fff5;
}
.socmenu.active li{scale:1;}
.socmenu li a{
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 80px;
    height: 80px;
    background: var(--clr);
    color: #fff;
    font-size: 2.25em;
    border-radius: 50%;
    transform: rotate(calc(360deg/-4*var(--i)));
    box-shadow: 0 3px 4px rgba(0,0,0,0.15)
}
.socmenu li a img{width:1em;}

@media (prefers-color-scheme: dark){
    body{
        background: #333;
        color: #fff;
    }
    h3{
        color: #fff;
    }
}
@media (prefers-color-scheme: light){
    body{
        background: #ddd;
        color: #000;
    }
    h3{
        color: #000;
    }
}