#et-main-area { overflow: hidden;} /* Hides all the items that float over the right margin */
  
    .diagonal-shadow::before,
    .diagonal-shadow::after {
        position: absolute;
        content: '';
        pointer-events: none;}
  
    .diagonal-shadow {
        z-index: 1;
        padding-top: 6em;
        background: #015587;}
  
    .diagonal-shadow::before,
    .diagonal-shadow::after {
        top: 0;
        left: -25%;
        z-index: -1;
        width: 150%;
        height: 75%;
        background: inherit;
        -webkit-transform: rotate(-2deg);
        transform: rotate(-2deg);
        -webkit-transform-origin: 0 0;
        transform-origin: 0 0;}
  
    .diagonal-shadow::before {
        height: 50%;
        background: #015587;
        -webkit-transform: rotate(-3deg);
        transform: rotate(-3deg);
        -webkit-transform-origin: 3% 0;
        transform-origin: 3% 0;}

I'm using a diagonal divider on several website pages and the bottom of the blue line comes out all jagged in Firefox 54.01. It's perfect on all other browsers. Here's the CSS I'm using: <pre><nowiki>#et-main-area { overflow: hidden;} /* Hides all the items that float over the right margin */ .diagonal-shadow::before, .diagonal-shadow::after { position: absolute; content: ''; pointer-events: none;} .diagonal-shadow { z-index: 1; padding-top: 6em; background: #015587;} .diagonal-shadow::before, .diagonal-shadow::after { top: 0; left: -25%; z-index: -1; width: 150%; height: 75%; background: inherit; -webkit-transform: rotate(-2deg); transform: rotate(-2deg); -webkit-transform-origin: 0 0; transform-origin: 0 0;} .diagonal-shadow::before { height: 50%; background: #015587; -webkit-transform: rotate(-3deg); transform: rotate(-3deg); -webkit-transform-origin: 3% 0; transform-origin: 3% 0;} </nowiki></pre> I've attached a screenshot. It's the edges of the blue diagonal that are ragged. Any help appreciated. Thanks.