all width heigth 100%

add.css

.page_add {
    width: 100%;
    height: 100%;
    background: #eee;
}

animation.css

.active_select {
    background: orange;
    color: aliceblue;
}

.fade-enter {
    opacity: 0.1;
}

.fade-enter.fade-enter-active {
    opacity: 1;
    transition: all 300ms ease-out;

}

.translateX-enter {
    transform: translateX(100%);
}

.translateX-enter.translateX-enter-active {
    transform: translateX(0%);
    transition: all 300ms ease-out;

}

.bottom2top-enter {
    transform: translateY(100%);
}

.bottom2top-enter.bottom2top-enter-active {
    transform: translateY(0%);
    transition: all 300ms ease-out;
}

.toleft-enter {
    transform: translateX(100%);
}

.toleft-enter.toleft-enter-active {
    transform: translateX(0%);
    transition: all 500ms ease-out;

}

.toright-enter {
    transform: translateX(-100%);
}

.toright-enter.toright-enter-active {
    transform: translateX(0%);
    transition: all 500ms ease-out;

}

.fade-leave, .translateX-leave, .translateY-enter, .toRight-enter, .toLeft-enter {
    opacity: 0;
}


/*drawer*/
:global(html) {
    padding: 0;
    margin: 0;
}

:global(body) {
    padding: 0;
    margin: 0;
}

:global(.drawer) {
    transform: translateX(-100%);
    position: absolute;
    top: 0;
    width: 30%;
    background: #fff;
    height: 100%;
    z-index: 10;
}

:global(.backMark) {
    transform: translateX(-100%);
    background: #222;
    position: absolute;
    opacity: 0.5;
    top: 0;
    z-index: 8;
    width: 100%;
    height: 100%;
}

:global(.backMark.active) {
    transform: translateX(0%);
}

:global(.drawer.active_in) {
    transform: translateX(0%);
    transition: all 300ms ease-in-out
}

:global(.drawer.active_out) {
    transform: translateX(-100%);
    transition: all 300ms ease-in-out
}

home.css

.src_page_component_app_content_js_wrapper {
    box-sizing: border-box;
    margin-top: 10px;
    position: relative;
}

.src_page_component_app_content_js_wrapper:after {
    content: "";
    width: 100%;
    height: 1px;
    position: absolute;
    bottom: -10px;
    background: #eee;
}
.src_page_component_app_content_js_artitle{
     width: 100%;
     overflow: hidden;
     padding: 10px;
     box-sizing: border-box;
}
.src_page_component_app_content_js_content {

    width: 100%;

    overflow: hidden;
    height: 62px;
}

.src_page_component_app_content_js_title {
    font-size: 20px;
}

.src_page_component_app_content_js_title small {
    font-size: 12px;
}

.src_page_home_content_wrapper {
    margin-bottom: 100px;
}

.src_page_home_js_typewrapper {
    display: flex;
    padding: 20px 0;
    border-bottom: 1px dashed #eee;
    border-top: 1px dashed #eee;
}

.src_page_component_app_type_js_label {
    padding: 10px;
    border: 1px solid #eee;
    background: rgba(238, 238, 238, 0.18);
    margin-left: 10px;
}
/* header */
.src_page_home_js_header {
    position: fixed;
    display: flex;
    color: #fff;
    background-color: #2185d0;
    box-shadow: #1e6ead 0px 3px;
    margin-bottom: 4px;
    position: fixed;
    top: 0;
    width: 100%;
    max-width: 700px;
    box-sizing: border-box;
    z-index: 9;
    line-height: 40px;
}
.src_page_home_js_header_left,.src_page_home_js_header_title,
.src_page_home_js_header_right
{
    display: flex;
    flex: 1;
    /* text-align: center;
    justify-content: center; */
    align-items: center;
}
.src_page_home_js_header_left{
    justify-content: start;
    padding-left: 10px; 
}
.src_page_home_js_header_right{
    justify-content: flex-end;
    padding-right:  10px; 
}

.src_page_App_js_bottom {
    position: fixed;
    bottom: 0;
    flex: 1;
    display: flex;
    background: #fff;
    width: 100%;
    z-index: 9;
    border:1px solid #eee;
}
@media screen and  (min-width: 700px) {
    .src_page_App_js_bottom {
        width: 700px; /*这是重点，pc居中*/
    }
}

.active_select {
    padding-top: 5px;
    width: 33.33%;
    text-align: center;
    justify-items: center;
}

.active_select_no {
    padding-top: 5px;
    width: 33.33%;
    text-align: center;
    justify-items: center;
}

.page_home,.page_add,.page_mine{
    z-index: 8;
}

index.css

* {
    box-sizing: border-box;
}

html, .App, #root, body {
    padding: 0;
    width: 100%;
    height: 100%;
}

body {
    margin: 0 auto !important;
    overflow-x: hidden;
}

@media screen and  (min-width: 700px) {
    body {
        width: 700px; /*这是重点，pc居中*/
    }
}

/*bottom*/
._navItem {
    transition: all 500ms ease-out;
}

._navItem.active {
    background: rgb(33, 133, 208) !important;

}

mine.css

.page_mine {
    width: 100%;
    height: 100%;
    background: #eee;
}