Z-Index issue in my CSS - html

Question

so I am working on creating a new portfolio for myself and I have just hit a little wall with a CSS issue while trying to style my social icons a certain way. The desired effect I am going for can be seen here: My Social Icons Demo. However, if you view my portfolio, here, you can see that I'm not quite getting the same effect (note: my social icons are located in the top and bottom left corners of the page). I can't seem to get the white background behind my social icon images to transition in. I think this may have to do with a z-index error that is possibly conflicting with something else on my portfolio page but as of right now I am stuck.. any ideas?? Would greatly appreciate it! Code below:
HTML
<!-- SOCIAL -->
<div class="col-sm-4 text-left">
<div class="social-icons">
<a href="https://github.com/jlquaccia" target="_blank" class="me-transparent-btn">
<img src="./img/icons/github-6-48.png" alt="Github">
</a>
<a href="https://www.linkedin.com/profile/view?id=227782654&trk=nav_responsive_tab_profile" target="_blank" class="me-transparent-btn">
<img src="./img/icons/linkedin-48.png" alt="LinkedIn">
</a>
<a href="http://instagram.com/jquatchaa" target="_blank" class="me-transparent-btn">
<img src="./img/icons/twitter-48.png" alt="Instagram">
</a>
</div>
</div>
CSS
.hero {
background-image: url(../img/star_trails_2_large.jpg);
background-attachment: fixed;
background-size: cover;
}
.social-icons {
margin-top: 41px;
a {
display: inline-block;
width: 50px;
height: 50px;
border: 1px solid #fff;
margin: 5px;
padding: 0;
position: relative;
cursor: pointer;
img {
-webkit-filter: invert(100%);
-moz-filter: invert(100%);
-ms-filter: invert(100%);
-o-filter: invert(100%);
filter: invert(100%);
vertical-align: bottom;
display: inline-block;
-webkit-transform: scale(.7);
-moz-transform: scale(.7);
-ms-transform: scale(.7);
-o-transform: scale(.7);
transform: scale(.7);
-webkit-transition: all 400ms ease;
-moz-transition: all 400ms ease;
-ms-transition: all 400ms ease;
-o-transition: all 400ms ease;
transition: all 400ms ease;
}
&:hover img {
-webkit-filter: invert(0%);
-moz-filter: invert(0%);
-ms-filter: invert(0%);
-o-filter: invert(0%);
filter: invert(0%);
-webkit-transform: scale(.8);
-moz-transform: scale(.8);
-ms-transform: scale(.8);
-o-transform: scale(.8);
transform: scale(.8);
}
&:after {
content: '';
background: #fff;
position: absolute;
width: 0;
height: 103%;
opacity: .5;
-webkit-transition: all 0.3s;
-moz-transition: all 0.3s;
-ms-transition: all 0.3s;
-o-transition: all 0.3s;
transition: all 0.3s;
left: 50%;
top: 50%;
z-index: -1;
-webkit-transform: translateX(-50%) translateY(-50%);
-moz-transform: translateX(-50%) translateY(-50%);
-ms-transform: translateX(-50%) translateY(-50%);
-o-transform: translateX(-50%) translateY(-50%);
transform: translateX(-50%) translateY(-50%);
}
&:hover:after {
opacity: 1;
width: 105%;
}
}
}
.no_margin {
margin: 50px 0;
}
.img-responsive-center {
display: inline-block;
padding-top: 75px;
}
.inner {
padding-bottom: 100px;
span {
color: #EF3D33;
}
}
.text-center {
h2 {
color: white;
}
}
.delay-05s {
-webkit-animation-delay: 0.5s;
animation-delay: 0.5s;
}
.delay-1s {
-webkit-animation-delay: 1s;
animation-delay: 1s;
}
.delay-3s {
-webkit-animation-delay: 3s;
animation-delay: 3s;
}
#media (max-width: 767px) {
.social {
display: none;
}
.img-responsive-center {
padding-top: 100px;
}
}
.down-btn {
width: 60px;
height: 60px;
background-color: $down-btn-bg;
-webkit-border-radius: 50%;
-moz-border-radius: 50%;
-o-border-radius: 50%;
border-radius: 50%;
color: #fff;
font-size: 20px;
line-height: 60px;
-webkit-transition: all 0.5s;
-moz-transition: all 0.5s;
-o-transition: all 0.5s;
transition: all 0.5s;
&:hover,
&:focus {
background-color: $down-btn-hover-focus;
color: #fff;
}
}
.down-btn-padding {
padding-bottom: 80px;
}

Answer 1

Add to your div.social-icons position:relative; z-index:1; and this should solve your issue.