Remove the Border-Radius of Input Field
Remove the Border-Radius of Input Field

Remove the border-radius or round corner in input field in HTML

Default its add by the Bootstrap framework. So we need to over-ride the Bootstrap style sheet.

Most people ask me “I’ve explored all the CSS that is changing that select element but none of it seems to remove the border-radius.”

Here is the solution

<select id="mySelect">
<option>Option 1</option>
<option>Option 2</option>
</select>
#mySelect{
outline: none !important;
width: 60%;
height: 38px;
padding: 8px 10px;
font-size: 14px;
line-height: 1.428571429;
color: #555555;
vertical-align: middle;
background-color: #ffffff;
border: 1px solid #c1bdb8;
border-radius: 4px;
-webkit-transition: border-color ease-in-out .15s, box-shadow ease-in-out .15s;
transition: border-color ease-in-out .15s, box-shadow ease-in-out .15s;
-webkit-transition: all border-color ease-in-out .15s, box-shadow ease-in-out .15s ease-out;
-moz-transition: all border-color ease-in-out .15s, box-shadow ease-in-out .15s ease-out;
-o-transition: all border-color ease-in-out .15s, box-shadow ease-in-out .15s ease-out;
transition: all border-color ease-in-out .15s, box-shadow ease-in-out .15s ease-out;
border-radius: 0 !important;
-webkit-appearance: none !important;
}

Note – !important mean – must use this style.

Another solution

<select id="mySelect">
<option>Option 1</option>
<option>Option 2</option>
</select>
select:not([multiple]){
-webkit-appearance:none;
-moz-appearance:none;
background-position:right 50%;
background-repeat:no-repeat;
background-image:url(data:image/png;base64,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);
padding: .5em;
padding-right:1.5em;
}

#mySelect {
border-radius:0;
}