JSFiddle - React, Tailwind, and code Playground

HTML

<div class="alert alert-primary">
        歡迎您點擊「抖內」按鈕，以實際行動支持我們。
        <button onclick="remove_alert()" class="btn-close btn-close-primary">✘</button>
    </div>
    <hr>

    <div class="alert alert-success">
        您已成功下訂單！以下為您的訂單詳細資訊。
        <button onclick="remove_alert()" class="btn-close btn-close-success">✘</button>
    </div>
    <hr>

    <div class="alert alert-danger">
        抱歉，系統發生錯誤，請稍後重新嘗試。
        <button onclick="remove_alert()" class="btn-close btn-close-danger">✘</button>
    </div>
    <hr>

    <div class="alert alert-warning">
        請注意，以下內容包含「劇透」爆雷資訊。
    <button onclick="remove_alert()" class="btn-close btn-close-warning">✘</button>
    </div>

CSS

.alert{
    width: 500px;
    height: 40px;

    text-align: center;
    line-height: 40px;

    font-family: Comic Sans MS , Microsoft JhengHei;
    border-radius: 10px;
}
.alert:hover{
    box-shadow: 0px 2px 2px 0px #b1b1b1;
}


.alert-primary{
    border: 3px solid #2894FF;
    color: #0066CC;
    background-color: #d0e8ff;
}

.alert-success{
    border: 3px solid #1AFD9C;
    color: #00BB00;
    background-color: #d0ffd6;
}

.alert-danger{
    border: 3px solid #EA0000;
    color: #D9006C;
    background-color: #ffd0d0;
}

.alert-warning{
    border: 3px solid #FFA042;
    color: #D94600;
    background-color: #ffefd0;
}


.btn-close{
    background-color: transparent;
    border: 0;
    font-family: Comic Sans MS , Microsoft JhengHei;
    transition: 0.3s;
}
.btn-close:hover{
    font-weight: bold;
    transform: scale(1.5);
}
.btn-close:active{
    transform: scale(1.2);
}

.btn-close-primary{
    color: #0066CC;
}

.btn-close-success{
    color: #00BB00;
}

.btn-close-danger{
    color: #D9006C;
}

.btn-close-warning{
    color: #D94600;
}

JavaScript

function remove_alert(){

    var remove_alert = event.target.closest('div');
    remove_alert.remove();

}