生成添加网格背景css样式代码并放入gui样式类中

.gui { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100%' height='100%' viewBox='0 0 1600 1600' preserveAspectRatio='none'%3E%3Cg fill-opacity='0.05'%3E%3Cg fill='%231f1f1f' fill-opacity='0.07'%3E%3Cpath d='M0 0h1600v1600H0z'/%3E%3C/g%3E%3C/g%3E%3Cg stroke='%231f1f1f' stroke-opacity='0.1' stroke-width='1'%3E%3Cg stroke-dasharray='5%2C5'%3E%3Cpath d='M0 0h1600v1600H0z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E"); }