如何修改input的placeholder默认颜色

input:-moz-placeholder,   
textarea:-moz-placeholder {   
    color: #C0C4CC;   
}   
 
input:-ms-input-placeholder,   
textarea:-ms-input-placeholder {   
    color: #C0C4CC;   
}   
 
input::-webkit-input-placeholder,   
textarea::-webkit-input-placeholder {   
    color: #C0C4CC;   
}
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