灰度图像css的灰度以上梯度

Question

我有下面的代码，一个灰度背景的图像和包含图像的div，它有一个梯度。

我的问题是梯度也出现在灰度上。

我需要梯度在灰度图像之上。

有什么想法吗？

<div id="contentVisi" class="overlaySeg"></div>

#contentVisi {
    background-image: url("images/visitantes.jpg");
    background-repeat: no-repeat;
    background-size: cover;
    width: 100%;
    height: 586px;
    -webkit-filter: grayscale(100%);
}
.overlaySeg::before {
    background: -moz-radial-gradient(74% 27%, circle cover, rgba(227,79,120,0) 0%, rgba(227,79,120,0.29) 29%, rgba(227,79,120,0.61) 61%, rgba(227,79,120,1) 100%);
    background: -webkit-radial-gradient(74% 27%, circle cover, rgba(227,79,120,0) 0%, rgba(227,79,120,0.29) 29%, rgba(227,79,120,0.61) 61%, rgba(227,79,120,1) 100%);
    background: -o-radial-gradient(74% 27%, circle cover, rgba(227,79,120,0) 0%, rgba(227,79,120,0.29) 29%, rgba(227,79,120,0.61) 61%, rgba(227,79,120,1) 100%);
    background: -ms-radial-gradient(74% 27%, circle cover, rgba(227,79,120,0) 0%, rgba(227,79,120,0.29) 29%, rgba(227,79,120,0.61) 61%, rgba(227,79,120,1) 100%);
    background: radial-gradient(circle at 74% 27%, rgba(227,79,120,0) 0%, rgba(227,79,120,0.29) 29%, rgba(227,79,120,0.61) 61%, rgba(227,79,120,1) 100%);
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#e34f78', endColorstr='#e34f78', GradientType=1 );
    background-repeat: no-repeat;
    background-size: cover;
    width: 100%;
    height: 586px;
    content: '';
    position: absolute;
    opacity: 0.6;
    top: 0;
    z-index: 3;
}

Answer 1

将您的div包到另一个div中，并在该div中添加彩色渐变。

HTML：

<div class="overlaySeg"><div id="contentVisi"></div></div>

CSS：

#contentVisi {
    background-image: url("http://s3.amazonaws.com/colorcombos-images/users/1/color-schemes/color-scheme-375-main.png?v=20120505082910");
    background-repeat: no-repeat;
    background-size: cover;
    width: 487px;
    height: 290px;
    -webkit-filter: grayscale(100%);
}
.overlaySeg {
  position:relative;
  display:inline-block;
}
.overlaySeg:after {
    background: -moz-radial-gradient(74% 27%, circle cover, rgba(227,79,120,0) 0%, rgba(227,79,120,0.29) 29%, rgba(227,79,120,0.61) 61%, rgba(227,79,120,1) 100%);
    background: -webkit-radial-gradient(74% 27%, circle cover, rgba(227,79,120,0) 0%, rgba(227,79,120,0.29) 29%, rgba(227,79,120,0.61) 61%, rgba(227,79,120,1) 100%);
    background: -o-radial-gradient(74% 27%, circle cover, rgba(227,79,120,0) 0%, rgba(227,79,120,0.29) 29%, rgba(227,79,120,0.61) 61%, rgba(227,79,120,1) 100%);
    background: -ms-radial-gradient(74% 27%, circle cover, rgba(227,79,120,0) 0%, rgba(227,79,120,0.29) 29%, rgba(227,79,120,0.61) 61%, rgba(227,79,120,1) 100%);
    background: radial-gradient(circle at 74% 27%, rgba(227,79,120,0) 0%, rgba(227,79,120,0.29) 29%, rgba(227,79,120,0.61) 61%, rgba(227,79,120,1) 100%);
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#e34f78', endColorstr='#e34f78', GradientType=1 );
    background-repeat: no-repeat;
    background-size: cover;
    width: 100%;
    height: 100%;
    content: '';
    position: absolute;
    opacity: 0.6;
    top: 0;
    z-index: 3;
}

Codepen：http://codepen.io/saqibamin/pen/jWGJEB