html元素有哪些自带样式，如何去除

h1,h2,h3,h4,h5,h6{font-weight:normal;}

input,textarea {

    outline: none;

    border: none;

}

textarea {

    resize: none;

    overflow: auto;

}

i{font-style: normal;}

table{border-collapse:collapse;border-spacing:0;}

/*去除input[type=number]加减号*/

/* 谷歌 */

input::-webkit-outer-spin-button,

input::-webkit-inner-spin-button {

    -webkit-appearance: none;

    appearance: none;

    margin: 0;

}

/* 火狐 */

input{

    -moz-appearance:textfield;

}