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CSS

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HTML 

              
                <!-- powered by YEK (https://github.com/yek-org) -->
<!--  Instagram : @mikoloism   -->
<!--  Codepen 	: @miko-github -->
<div class="yek-social">
	<ul class="yek-social__list">
		<li class="yek-social__item">
			<a class="yek-social__link" href="#">
				<span class="yek-social__button yek-social__button--youtube">
					<i class="yek-social__icon fab fa-youtube"></i>
				</span>
			</a>
		</li>
		<li class="yek-social__item">
			<a class="yek-social__link" href="#">
				<span class="yek-social__button yek-social__button--twitter">
					<i class="yek-social__icon fab fa-twitter"></i>
				</span>
			</a>
		</li>
		<li class="yek-social__item">
			<a class="yek-social__link" href="#">
				<span class="yek-social__button yek-social__button--telegram">
					<i class="yek-social__icon fab fa-telegram"></i>
				</span>
			</a>
		</li>
		<li class="yek-social__item">
			<a class="yek-social__link" href="#">
				<span class="yek-social__button yek-social__button--instagram">
					<i class="yek-social__icon fab fa-instagram"></i>
				</span>
			</a>
		</li>
	</ul>
</div>

<a href="https://github.com/miko-githu" class="follow-me">
	<span class="mute">follow</span>
	<span class="link"> @mikoloism </span>
	<span class="mute">for more</span>
</a>
!

CSS 

              
                /* YEK (https://github.com/yek-org)
-------------------------------------- */
$yek-light: #fff;
$yek-gray--100: #f9f9f9;
$yek-gray--400: #f4f4f4;
$yek-gray--800: #444;
$yek-blue--600: #69c;
@function _yek-btn--size($s: "md") {
	$_s: map-get(
		(
			small: 42px,
			sm: 42px,
			medium: 60px,
			md: 60px,
			larg: 72px,
			lg: 72px
		),
		$s
	);
	@return $_s;
}

/* variables
---------------------------- */
$COLOR_YOUTUBE: #c4302b;
$COLOR_TWITTER: #00acee;
$COLOR_TELEGRAM: #0088cc;
$COLOR_INSTAGRAM: #c13584;

// color
$body-bg: #888;

/* 3D-BOX ($bx-)
------------------------- */
$bx-color--side: #b1b1b1;
$bx-shadow: -20px 20px 5px rgba($yek-gray--800, 0.5);
$bx-skew--before: skewY(-45deg);
$bx-skew--after: skewX(-45deg);
$bx-rotate--side: rotate(0deg);
$bx-skew--target: skew(25deg);
$bx-rotate--target: rotate(-25deg);
$bx-transform--before: $bx-rotate--side $bx-skew--before;
$bx-transform--after: $bx-rotate--side $bx-skew--after;
$bx-transform--target: perspective(1000px) $bx-rotate--target $bx-skew--target;
$bx-transform-target--hover: $bx-transform--target translate(20px, -20px);

// MIXIN
@mixin yek-button($s: "md", $t: 144px) {
	$_size: _yek-btn--size($s);
	@include yek-size($t, $_size);
}
@mixin yek-fab($s: "lg", $r: 1) {
	$_size: _yek-btn--size($s) * $r;
	@include yek-size($_size, $_size);
}
@mixin bx-variant($e, $c) {
	&--#{$e} {
		background-color: $c;
		box-shadow: -50px 50px 20px rgba($c, 0.5); // blur: 20px
		&::before {
			background-color: lighten($c, 7);
		}
		&::after {
			background-color: lighten($c, 14);
		}
	}
}

/* resets
---------------------------- */

body {
	@include yek-aligns;
	background-color: $body-bg;
}

a {
	color: $yek-blue--600;
	text-decoration: none;
	cursor: pointer;
}

/* stylesheets
---------------------------- */
.yek-social {
	@include yek-size(750px, 190px);

	&__list,
	&__item,
	&__link,
	&__button {
		@include yek-flex;
		@include yek-align;
	}
	&__list,
	&__link {
		@include yek-size;
	}

	&__list {
		@include yek-align(space-between);
		border-radius: 9px;
		padding: 9px;
		// background-color: $yek-gray--800;
	}

	&__item {
		@include yek-size(24%, 100%);
		border-radius: 9px;
		background-color: #888;
	}

	// link style
	&__button {
		@include yek-fab;
		background-color: #fff;
		box-shadow: $bx-shadow;
		transition: 0.5s 0.15s;
	}

	// box style
	&__button {
		position: relative;
		transform: $bx-transform--target;

		&::before,
		&::after {
			content: "";
			position: absolute;
		}

		&::before {
			@include yek-size(21px, 100%);
			top: 10px;
			left: -20px;
			background-color: darken($bx-color--side, 7);
			transition: 0.5s 0.15s;
			transform: $bx-transform--before;
		}

		&::after {
			@include yek-size(100%, $h: 21px);
			bottom: -20px;
			left: -10px;
			transition: 0.8s 0.15s;
			background-color: lighten($bx-color--side, 7);
			transform: $bx-transform--after;
		}
	}

	&__icon {
		color: $yek-gray--800;
		font-size: 1.7em;
		transition-delay: 0.2s;
	}

	/* animaitons
	------------------------- */
	&__link:hover &__icon {
		color: $yek-light;
	}

	&__link:hover &__button {
		@include bx-variant("youtube", $COLOR_YOUTUBE);
		@include bx-variant("twitter", $COLOR_TWITTER);
		@include bx-variant("telegram", $COLOR_TELEGRAM);
		@include bx-variant("instagram", $COLOR_INSTAGRAM);
		transform: $bx-transform-target--hover;
	}
}

.follow-me {
	display: inline-block;
	position: fixed;
	bottom: 14px;
	left: 14px;
	padding: 9px;
	border-radius: 9px;
	font-family: "ubuntu";
	background-color: #fff;
	.link {
		transition: 0.3s 0.2s linear;
		border-radius: 4px;
		padding: 4px;
		&:hover {
			margin: 4px;
			color: $yek-light;
			background-color: $yek-blue--600;
		}
	}
	.mute {
		color: black;
	}
}
!

JS 

              
                // NO THANKS!
!
999px

Console