Seeking guidance on how to adjust the thickness of the arrow used as a scroll button on my website. I am aiming for a similar look to the arrow on this particular website: example of arrow https://i.sstatic.net/wO5br.png
To view my code, please visit: Codepen
.next {
position:absolute;
bottom:0;
left:50%;
margin-left:-40px;
transform:rotate(-90deg);
cursor:pointer;
}
Thank you!
Liam.