misaligned lis inside ul

HTML

<div class="col-md-10 pa-zero ng-scope">
    <ul style="border:1px solid blue">
        <li class="breadCrumb" style="font-size: 1.000em;margin-right:5px">	
            <span class="pa-apply-font">Raw Materials : rm-	</span>
        </li>
        <li class="breadCrumb" style="font-size: 1.000em; margin-right: 5px">
            <div>
                <button style="border: none; background-color: inherit;">Formulas (3)</button>
            </div>
            
        </li>
    </ul>
</div>

CSS

div {
    margin: 0px;
    padding: 0px;
    float: left;
    position: relative;
    min-height: 1px;
}
ul {
    display: block;
    list-style-type: none;
    -webkit-margin-before: 0em;
    -webkit-margin-after: 0em;
    -webkit-margin-start: 0px;
    -webkit-margin-end: 0px;
    -webkit-padding-start: 10px;
}
.breadCrumb {
    display: inline-block;
    vertical-align: middle; /* or top or bottom */
    margin-right: 5px;
    border: 1px solid #C2C2C2;
    border-radius: 7px;
    color: #000000;
    line-height: 30px;
    padding-left: 10px;
    padding-right: 10px;
    font-size: 0.923em;
    font-weight: bold;
    font-family: AkzidenzGrotesk, Arial, "Arial Bold";
    background: -webkit-gradient(linear, left top, left bottom, from(#FCFCFC), to(#E1E1E1));
}
.pa-apply-font {
    color: #000000;
    text-transform: initial;
}