#find-store-search {
    max-width: 500px;
}

#find-store-search label {
    display:block;
}

#find-store-search h3 {
    display:block;
}

#find-store-search .input-box {
    display: inline-block;
    clear: both;
    float: left;
    padding-right: 10px;
    width: 310px;
}

#find-store-search .input-box input {
    min-width: 250px;
}

#find-store-search button {
    padding: 13px 10px;
    margin: 0;
    vertical-align: top;
}

@media only screen and (max-width: 450px) {
    
    #find-store-search label {
        text-align: center;
    }
    
    #find-store-search .input-box {
        width:calc(100% - 20px);
        padding:0 10px 10px;
    }
    
    #find-store-search button {
        width: calc(100% - 20px);
        margin: 0 10px;
    }
    
}