How to create reset button in html

<form id="Form"> <input type="button" onclick="Function()" value="Reset form"> </form> <script> function Function() { document.getElementById("Form").reset(); } </script>

How to change placeholder color with css

::-webkit-input-placeholder { /* WebKit browsers */
    color:    #333;
}
:-moz-placeholder { /* Mozilla Firefox 4 to 18 */
    color:    #333;
}
::-moz-placeholder { /* Mozilla Firefox 19+ */
    color:    #333;
}
:-ms-input-placeholder { /* Internet Explorer 10+ */
    color:    #333;
}

Div centering: when width auto

.outermost-div{
    overflow:hidden;  
}


.inner-div{
   float:left;
    left:50%;
    position: relative;
}

.centered-div{
    position: relative;
    float:left;
    left: -50% ;
    width: auto;
}

<div class = "outermost-div"> <div class = "inner-div"> <div class = "centered-div"> Example </div> </div> </div>