Для IE10 + вы можете попробовать с -ms-linear-gradient
:
background: rgba(0,0,0,1);/* Old Browsers */
background: -moz-linear-gradient(left, rgba(0,0,0,1) 0%, rgba(255,255,255,0.5) 100%); /* FF3.6+ */
background: -webkit-gradient(left top, right top, color-stop(0%, rgba(0,0,0,1)), color-stop(100%, rgba(255,255,255,0.5)));/* Chrome, Safari4+ */
background: -webkit-linear-gradient(left, rgba(0,0,0,1) 0%, rgba(255,255,255,0.5) 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(left, rgba(0,0,0,1) 0%, rgba(255,255,255,0.5) 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(left, rgba(0,0,0,1) 0%, rgba(255,255,255,0.5) 100%); /* IE 10+ */
background: linear-gradient(to right, rgba(0,0,0,1) 0%, rgba(255,255,255,0.5) 100%);/* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#000000', endColorstr='#ffffff', GradientType=1 );/* IE6-9 */
Если хотите, можете создать этот код в этом инструменте:
https://www.cssmatic.com/gradient-generator