/*placeholder字体设置*/
:-moz-placeholder { /* Mozilla Firefox 4 to 18 */
color: #4a4a4a;
}
::-moz-placeholder { /* Mozilla Firefox 19+ */
color: #4a4a4a;
}
input:-ms-input-placeholder,
textarea:-ms-input-placeholder {
color: #4a4a4a;
}
input::-webkit-input-placeholder,
textarea::-webkit-input-placeholder {
color: #4a4a4a;
}
::placeholder{
color: #4a4a4a;
}