设置的颜色属性值可以使用16进制、rgba、rgb、颜色名称等进行设置，如"background:blue"。
CSS:
.grup{
padding-top: 104px
position: relative
border-radius: 15px
margin-bottom: 217px
}
.grup .img{
width: 370px
height: 87px
position: absolute
top:-48px
margin-left: calc(50% - 185px)
z-index:999
background: linear-gradient(
115deg, /*背景分割倾斜角度*/
#fff 0%,
#fff 40%,
#3596EB 40%,
#3596EB 100%
)
border: 4px solid #3596EB
border-radius: 44px
}
.grup .img .coun{
display: flex
justify-content: space-around
}
.grup .img .coun div{
display: flex
line-height: 88px
}
.grup .img .coun .left{
color:#3596EB
font-size: 32px
letter-spacing: 3px
font-weight: 500
}
.grup .img .coun .right{
color:#fff
font-size: 28px
letter-spacing: 3px
font-weight: 500
}
HTML:
<div class="up grup">
<div class="img">
<div class="coun">
<div class="left">新建</div>
<div class="right">所有文集</div>
</div>
</div>
</div>
效果：
