将图像添加到具有渐变边框的矩形

Question

您好我试图制作一系列以图标为背景的窗口，但我现在的css对于每个矩形都是这样的，但每当我将图标添加到div中时它都不会出现。有什么建议吗？

`    margin:30px;
    padding-bottom: 15%;
/*
    border-width: 1px;
    border: solid;
    border-color: -webkit-linear-gradient(left, #4100db 0%,#3b128e 24%);
    border-radius: 5px;
    color: #FFF;
    */
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);


    border-left: 2px solid #384395;
    border-right: 2px solid #6F3B97;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    background-position: 0 0, 0 100% ;
    background-repeat: no-repeat;
    -webkit-background-size: 100% 2px;
    -moz-background-size: 100% 2px;
    background-size: 100% 2px;
    background-image: url(data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiA/PjxzdmcgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIiB3aWR0aD0iMTAwJSIgaGVpZ2h0PSIxMDAlIiB2aWV3Qm94PSIwIDAgMSAxIiBwcmVzZXJ2ZUFzcGVjdFJhdGlvPSJub25lIj48bGluZWFyR3JhZGllbnQgaWQ9Imxlc3NoYXQtZ2VuZXJhdGVkIiBncmFkaWVudFVuaXRzPSJ1c2VyU3BhY2VPblVzZSIgeDE9IjAlIiB5MT0iMCUiIHgyPSIxMDAlIiB5Mj0iMCUiPjxzdG9wIG9mZnNldD0iMCUiIHN0b3AtY29sb3I9IiMzYWNmZDUiIHN0b3Atb3BhY2l0eT0iMSIvPjxzdG9wIG9mZnNldD0iMTAwJSIgc3RvcC1jb2xvcj0iIzNhNGVkNSIgc3RvcC1vcGFjaXR5PSIxIi8+PC9saW5lYXJHcmFkaWVudD48cmVjdCB4PSIwIiB5PSIwIiB3aWR0aD0iMSIgaGVpZ2h0PSIxIiBmaWxsPSJ1cmwoI2xlc3NoYXQtZ2VuZXJhdGVkKSIgLz48L3N2Zz4=),url(data:image/svg+xml;base64,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);
    background-image: -webkit-linear-gradient(left, #384395 0%, #6F3B97 100%), -webkit-linear-gradient(left, #384395 0%, #6F3B97 100%);
    background-image: -moz-linear-gradient(left, #384395 0%, #3a4ed5 100%), -moz-linear-gradient(left, #384395 0%, #6F3B97 100%);
    background-image: -o-linear-gradient(left, #384395 0%, #6F3B97 100%), -o-linear-gradient(left, #384395 0%, #6F3B97 100%);
    background-image: linear-gradient(to right, #384395 0%, #6F3B97 100%), linear-gradient(to right, #384395 0%, #6F3B97 100%);

`