css - margins and alignment in input element in bootstrap -

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i having trouble getting input element , button align correctly. looks like:

notice bottom alignment of button , input

this comes following code:

<div class="row">      <div class="offset1 span6">           <input type="text" class="l_input" placeholder="enter city"></input>      </div>      <div class="span3">            <button class="l_button btn btn-primary" type="button">search</button>      </div> </div>

i want input height same button, not case currently. assume because of margins/padding, tried set them 0 px in css: has no impact. 

.l_input {  padding: 0px;  margin: 0px;  }

what need height of input aligned height of search button?

you right, margins , padding in other element. try:

.l_input, .l_button {     padding: 0px;     margin: 0px; }

updated demo


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