Вам необходимо установить z-индекс svg как -1, а позиция должна быть абсолютной, а z-индекс раздела / текста, который вы хотите отобразить, как 1.
Попробуйте это. надеюсь, это поможет.
html {
scroll-behavior: smooth;
}
body {
background: #181818;
color: #fff;
}
.navbar {
background: #181818;
margin-top: 10px;
box-shadow: 5px 5px 10px #050505;
border-left: #E2007C solid;
border-right: #476dc5 solid;
}
.nav-brand h1 {
color: #fff;
text-decoration: none;
}
.nav-item {
color: #fff;
font-size: 15px;
border: 2px solid transparent;
transition: all ease-in-out 0.3s;
}
.nav-item:hover {
box-shadow: 5px 5px 10px #050505;
font-size: 16.5px;
}
#searchbar {
background-color: #131313;
border: transparent;
padding: 10px;
color: #fff;
box-sizing: border-box;
position: relative;
width: 200px;
outline: none;
transition: all ease-in-out 0.3s;
}
.underline {
background-color: #E2007C;
display: block;
height: 2px;
position: relative;
-webkit-transform: scale(0, 1);
transform: scale(0, 1);
-webkit-transition: all 0.3s linear;
transition: all 0.3s linear;
width: 302px;
}
#searchbar:focus+.underline {
transform: scale(1);
}
#searchbar:focus {
width: 300px;
}
.fa-angle-double-down {
font-size: 40px;
animation-name: upDown;
animation-duration: 2s;
animation-iteration-count: infinite;
}
section {
margin: 3%;
padding: 2%;
position: relative;
z-index: 1;
}
.column.circAnimate svg {
z-index: -1;
position: absolute;
}
.column {
flex: 1;
}
.introPara {
padding: 10%;
font-size: 20px;
}
.introPara p,
h1,
h6 {
padding: 0;
}
.introPara hr {
background-color: #E2007C;
width: 50%;
height: 5px;
margin: 10px 0;
border: none;
}
.boxed {
box-shadow: 5px 5px 10px #050505;
}
.highlight-pink {
color: #E2007C;
font: bold;
padding: 5px;
}
.highlight-blue {
color: #476dc5;
font: bold;
padding: 5px;
}
.highlight-green {
color: $themegreen;
font: bold;
padding: 5px;
}
.circAnimte {
z-index: -1;
}
circle {
fill: none;
stroke-width: 3.5;
animation-name: preloader;
animation-duration: 3s;
animation-iteration-count: infinite;
animation-timing-function: ease-in-out;
transform-origin: 250px 230px;
will-change: transform;
}
@for $i from 1 through 5 {
circle:nth-of-type(#{$i}) {
animation-delay: #{$i * 0.25}s;
}
}
@keyframes preloader {
0% {
transform: rotate(360deg) skewX(-30deg) skewY(30deg);
}
50% {
transform: skewX(90deg) skewY(90deg);
}
100% {
transform: skewX(-30deg) skewY(30deg);
}
}
<!DOCTYPE html>
<html lang="en">
<head>
<title>My Page</title>
<link rel="stylesheet" href="css/main.scss" />
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
</head>
<body>
<div class="container-fluid">
<div class="column circAnimate">
<svg viewBox="0 0 600 500" preserveAspectRatio="none">
<circle cx="250" cy="230" r="160" stroke="#E2007C"/>
<circle cx="250" cy="230" r="135" stroke="#0CCE6B"/>
<circle cx="250" cy="230" r="110" stroke="#476dc5"/>
<circle cx="250" cy="230" r="85" stroke="#0CCE6B"/>
<circle cx="250" cy="230" r="55" stroke="#E2007C"/>
</svg>
</div>
<header>
<nav class="navbar navbar-expand-lg navbar-fixed-top">
<div class="navbar-nav">
<a class="nav-item nav-link p-3" href="index.html">Home</a>
<a class="nav-item nav-link p-3" href="#">Contact Me</a>
</div>
<div class="ml-auto">
<input id="searchbar" type="search" placeholder="Search" />
<!-- Span class below is for animated underline on the searchbar -->
<span class="underline"></span>
</div>
</nav>
</header>
<section>
<div class="row">
<div class="column introPara">
<p>Welcome to my Website</p>
<hr/>
<h1>Ryan Kuruppu</h1>
<!-- h6 section can be improved using only CSS but for now its coded using utf-8 symbols -->
<h6>❮ <span class="highlight-blue">Web Developer</span> ❮ <span class="highlight-green"> Mobile App Developer</span> ❯ <span class="highlight-purple">Application Dev</span>
❯
</h6>
<p>Undergraduate student at the <span class="highlight-blue boxed">Informatics Institute of Technology</span></p>
<p>BSc(Hons) Computer Science</p>
</div>
</div>
<div class="row">
<div class="ml-auto mr-auto">
<a href="#section2"><i class="fas fa-angle-double-down"></i></a>
</div>
</div>
</section>
</div>
</body>
</html>