JSFiddle - React, Tailwind, and code Playground

HTML

<div id="add_course">
    <form action="add_course.php" method="post" enctype="multipart/form-data" name="add_course_form" id="add_course_form" onsubmit="return validate_form();">
        <div class="add_course_lables">
            <input class="add_course_name" name="coursename" type="text" id="coursename" size="30" placeholder="Course Name" maxlength="64" />
            <br />
            <input name="par" type="text" id="par" size="30" placeholder="Par" maxlength="2" />
            <input name="rating" type="text" id="rating" size="30" placeholder="Rating" maxlength="2" />
            <input name="slope" type="text" id="slope" size="30" placeholder="Slope" maxlength="3" />
            <br />
        </div>
        <div style="margin:0px auto; overflow: auto; display: table; text-align:center" id="add_course_table">
            <div class="display-inline">
                <div style="width:60px" id="add_course_top_row">Hole</div>
                <div id="add_course_top_row">1</div>
                <div id="add_course_top_row">2</div>
                <div id="add_course_top_row">3</div>
                <div id="add_course_top_row">4</div>
                <br style="clear: left;" />
            </div>
            <div class="display-inline">
                <div id="add_course_other_rows_left">Par</div>
                <div id="add_course_other_rows">
                    <input type="text" maxlength="1" name="par1" />
                </div>
                <div id="add_course_other_rows">
                    <input type="text" maxlength="1" name="par2" />
                </div>
                <div id="add_course_other_rows">
                    <input type="text" maxlength="1" name="par3" />
                </div>
                <div id="add_course_other_rows">
                    <input type="text" maxlength="1" name="par4" />
                </div>
                <br style="clear: left;" />
            </div>
            <div class="display-inline">
        ...

CSS

@charset"utf-8";
 .add_course_lables {
    width: 500px;
    height: 120px;
    border-radius: 5px 5px 0px 0px;
    margin-left: auto;
    margin-right: auto;
}
.add_course_lables input {
    color: #16a085;
    padding: 10px;
    margin-top: 5px;
    width:135px;
    font-size: 15px;
    border: 1px solid #16a085;
    border-bottom: 2px solid #16a085;
    border-radius: 5px;
    transition:border 0.15s linear 0s, box-shadow 0.15s linear 0s, color 0.15s linear 0s;
}
.add_course_lables .add_course_name {
    width:91.5%;
}
.add_course_lables input:focus {
    border-color:#2ecc71;
    outline: none;
    box-shadow: 0 0 2px 1px #2ecc71;
}
.add_course_lables input:hover {
    border-color:#2ecc71;
    outline: none;
    box-shadow: 0 0 2px 1px #2ecc71;
}
.add_course_button {
    background: #16a085;
    color: white;
    border: 1px solid #16a085;
    border-radius: 5px;
    transition: background .4s linear;
    padding: 10px;
    font-weight: 600;
    font-size: 20px;
    cursor: pointer;
    margin-top: 10px;
    position: relative;
    left: 45%;
    right: 0%;
    margin-top:20px;
}
#add_course_top_row {
    border-radius: 4px;
    border-color: #FFFFFF;
    border-style: solid;
    background: #16A085;
    color: #FFFFFF;
    font-family:'Open Sans', sans-serif;
    font-size: 16px;
    text-align: center;
    padding: 2px;
    margin-right: 0px;
    width: 30px;
    border-width: thin;
    display: inline-flex;
}
#add_course_other_rows_left {
    color: #16a085;
    border-radius: 4px;
    border-color: #16a085;
    border-style: solid;
    border-width: thin;
    background: #FFFFFF;
    font-family:'Open Sans', sans-serif;
    font-size: 16px;
    text-align: center;
    padding: 2px;
    margin-right: 3px;
    margin-top:2px;
    width: 60px;
    display:inline-flex;
}
#add_course_other_rows input {
    color: #16a085;
    border-radius: 5px;
    border color:#BFBFBF;
    border-style: solid;
    border-width: thin;
    font-family:'Open Sans',...