JSFiddle - React, Tailwind, and code Playground

HTML

<form>
    <div>
        <label for="nombre">Nombre*:</label>
        <input type="text" name="nombre" id="nombre" placeholder="escribe tu nombre completo" required/>
    </div>
    
    <div>
        <label for="email">Mail*:</label>
        <input type="email" name="email" id="email" required/>
    </div>
    
    <div>
        <label for="mensaje">Mensaje:</label>
        <textarea name="nombre" id="nombre"></textarea>
    </div>
    
    <div class="buttons">
        <button type="submit">Enviar</button>
        <button type="reset">Borrar</button>
    </div>
</form>

CSS

*{
    margin:0; padding:0;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}
form{
    width:500px; 
    margin-left:20px; 
    margin-top:10px;
    background:#A3F5FB;
    border:1px solid #069;
    padding:23px 23px 0;
    border-radius:8px;
}
form > div{
   padding-bottom:10px;
}
form label{
    color:#069;
    width:130px; 
    font-family:Arial;
    font-size:17px;
    font-weight:500;
    display:inline-block;
}
input {
    width:300px;
    background-color:#E4FBFC;
    border: 1px solid #999;
    margin-left:10px;
    padding:6px 8px;
    border-radius:3px;
}
textarea {
    width:300px;
    height:130px;
    background:#E4FBFC;
    border: 1px solid #999;
    margin-left:10px;
    vertical-align:middle;
    resize:none;    
    border-radius:3px;
}
input:hover, input:focus,
textarea:hover, textarea:focus{
    background:#fff;
    border-color:#000;
    outline-color:#fff;
}
.buttons{
    margin:10px 0;
}
button{
    width:120px;
    height:29px;
    font-family:Arial;
    font-size:17px;
    font-weight:300;
    color:#E4FBFC;
    background:#006699;
    border-right: 2px solid #000;
    border-top: 2px solid #000;
    -webkit-border-radius:10px 0 10px 0;
    -moz-border-radius:10px 0 10px 0;
    border-radius:10px 0 10px 0;
}
button[type="submit"]{
    margin-left:150px;
    margin-right:10px;
}