.main-div textarea{height:100%}.layui-form-item{margin-bottom:30px}.tool-container{margin-top:60px;width:888px}.layui-form-item .layui-form-checkbox[lay-skin=primary]{margin-top:0}.layui-form-item .layui-input-inline{width:126px}.layui-form-select .layui-input{height:30px}.charset-select .layui-form-label{width:100px}.charset-select .layui-input-inline{margin-top:5px}.base64-result-block{position:relative}.base64-result-block textarea{padding-right:40px}.base64-result-block .copy-btn{position:absolute;right:5px;top:8px;background:0 0;border:0;border-radius:2px;padding:2px;font-size:12px;color:#666;cursor:pointer;display:none}.base64-result-block .copy-btn.show{display:block}.black .base64-result-block .copy-btn{color:#aaa}