ShareShare menu touch bottom

<nav id="bt-menu" class="bt-menu">
    <a href="#" class="bt-menu-trigger"><span>Menu</span></a>
        <ul>
                <li><a href="#" class="bt-icon icon-user-outline">About</a></li>
            <li><a href="#" class="bt-icon icon-sun">Skills</a></li>
            <li><a href="#" class="bt-icon icon-windows">Work</a></li>
            <li><a href="#" class="bt-icon icon-speaker">Blog</a></li>
            <li><a href="#" class="bt-icon icon-star">Clients</a></li>
            <li><a href="#" class="bt-icon icon-bubble">Contact</a></li>
        </ul>
</nav>

*,
*:after,
*::before {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}
 
body  {
    background: #2980b9;
}
 
.container {
    padding: 80px;
    text-align: center;
}
 
a.title{ color:#fff; font-size:12px; }
 
.container h1 {color:white; text-align: center;}
 
.bt-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 0;
    border-width: 0px;
    border-style: solid;
    border-color: #333;
    background-color: rgba(0,0,0,0);
    -webkit-backface-visibility: hidden;
    -webkit-transition: border-width 0.3s, background-color 0.3s, height 0s 0.3s;
    transition: border-width 0.3s, background-color 0.3s, height 0s 0.3s;
}
 
.bt-menu.bt-menu-open {
    height: 100%;
    border-width: 30px 30px 90px 30px;
    background-color: rgba(0,0,0,0.3);
    -webkit-transition: border-width 0.3s, background-color 0.3s;
    transition: border-width 0.3s, background-color 0.3s;
}
 
.bt-overlay {
    position: absolute;
    width: 100%;
}
 
.bt-menu-open .bt-overlay {
    height: 100%;
}
 
.bt-menu-trigger {
    position: fixed;
    bottom: 22px;
    left: 50%;
    z-index: 100;
    display: block;
    margin-left: -25px;
    width: 50px;
    height: 50px;
    cursor: pointer;
}
 
.bt-menu-trigger span {
    position: absolute;
    top: 50%;
    left: 0;
    display: block;
    width: 100%;
    height: 8%;
    background-color: #fff;
    font-size: 0px;
    -webkit-transition: background-color 0.3s;
    transition: background-color 0.3s;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}
 
.bt-menu-open .bt-menu-trigger span {
    background-color: #2980b9;
}
 
.bt-menu-trigger span:before,
.bt-menu-trigger span:after {
    position: absolute;
    left: 0;
    width: 100%;
    height: 100%;
    background: #fff;
    content: '';
    -webkit-transition: -webkit-transform 0.3s, background-color 0.3s;
    transition: transform 0.3s, background-color 0.3s;
}
 
.bt-menu-trigger span:before {
    -webkit-transform: translateY(-250%);
    transform: translateY(-250%);
}
 
.bt-menu-trigger span:after {
    -webkit-transform: translateY(250%);
    transform: translateY(250%);
}
 
.bt-menu-open .bt-menu-trigger span:before,
.bt-menu-open .bt-menu-trigger span:after {
    background-color: #2980b9;
}
 
.bt-menu-open .bt-menu-trigger span:before {
    -webkit-transform: translateY(-350%);
    transform: translateY(-350%);
}
 
.bt-menu-open .bt-menu-trigger span:after {
    -webkit-transform: translateY(350%);
    transform: translateY(350%);
}
 
.bt-menu ul {
    position: fixed;
    bottom: 0px;
    left: 0;
    margin: 0;
    padding: 0;
    width: 100%;
    list-style: none;
    text-align: center;
    white-space: nowrap;
    height: 0;
    -webkit-transition: height 0s 0.3s;
    transition: height 0s 0.3s;
}
 
.bt-menu.bt-menu-open ul {
    height: 90px;
    -webkit-transition: none;
    transition: none;
}
 
.bt-menu ul li,
.bt-menu ul li a {
    text-align: center;
}
 
.bt-menu ul li {
    display: inline-block;
    margin: 0 2%;
    width: 5%;
    height: 90px;
    line-height: 90px;
    opacity: 0;
    -webkit-transition: -webkit-transform 0.3s, opacity 0.3s;
    transition: transform 0.3s, opacity 0.3s;
    -webkit-transform: translate3d(0,100%,0);
    transform: translate3d(0,100%,0);
}
 
.bt-menu ul li:nth-child(3) {
    margin-right: 70px;
}
 
.bt-menu ul li:nth-child(4) {
    margin-left: 70px;
}
 
.bt-menu.bt-menu-open ul li {
    opacity: 1;
    -webkit-transform: translate3d(0,0,0);
    transform: translate3d(0,0,0);
}
 
.bt-menu.bt-menu-open ul li:first-child,
.bt-menu.bt-menu-open ul li:last-child {
    -webkit-transition-delay: 0.15s;
    transition-delay: 0.15s;
}
 
.bt-menu.bt-menu-open ul li:nth-child(2),
.bt-menu.bt-menu-open ul li:nth-last-child(2) {
    -webkit-transition-delay: 0.1s;
    transition-delay: 0.1s;
}
 
.bt-menu.bt-menu-open ul li:nth-child(3),
.bt-menu.bt-menu-open ul li:nth-last-child(3) {
    -webkit-transition-delay: 0.05s;
    transition-delay: 0.05s;
}
 
.bt-menu ul li a {
    display: block;
    outline: none;
    color: #fff;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 1.15em;
    -webkit-transition: color 0.2s;
    transition: color 0.2s;
}
 
.bt-menu ul li a:before {
    display: none;
    font-size: 32px;
}
 
.bt-menu ul li a:hover,
.bt-menu ul li a:focus {
    color: #2980b9;
}
 
@media screen and (max-width: 65.1em) {
    .bt-menu ul li a {
        font-size: 90%;
    }
}
 
@media screen and (max-width: 55.5em) {
    .bt-menu ul li {
        margin: 0 15px;
    }
 
    .bt-menu ul li a {
        font-size: 0px;
    }
 
    .bt-menu ul li a:before {
        display: block;
    }
}
 
@media screen and (max-width: 32em) {
    .bt-menu-trigger {
        width: 40px;
        margin-left: -20px;
    }
 
    .bt-menu ul li {
        margin: 0 2%;
    }
 
    .bt-menu ul li:nth-child(3) {
        margin-right: 50px;
    }
 
    .bt-menu ul li:nth-child(4) {
        margin-left: 50px;
    }
 
    .bt-menu ul li a:before {
        font-size: 24px;
    }
}

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