.bar { height: 100%; border-radius: 0px; background-color: #2476d4; color: #fff; justify-content: flex-start; display: flex; font-size: 14px; }怎么把这个类左对齐

在这个类的样式中，`justify-content: flex-start;` 属性实际上是将子元素沿着主轴起点对齐，而不是将整个元素左对齐。

如果你想要让 `.bar` 类左对齐，可以设置 `align-items: flex-start;` 属性，该属性将项目沿着交叉轴起点对齐，从而使整个元素左对齐。

例如：

.bar {
  height: 100%;
  border-radius: 0px;
  background-color: #2476d4;
  color: #fff;
  display: flex;
  font-size: 14px;
  align-items: flex-start;
  /* add other styles as needed */
}

这样就可以让 `.bar` 类左对齐了。

相关问题

优化下面代码.bg { width: 100%; height: 100vh; background-image: url('../../assets/img/info-bg.png'); background-size: 100% 100%; background-repeat: no-repeat; position: relative; font-family: AlibabaPuHuiTiR; .goBack { position: absolute; top: 34px; right: 65px; cursor: pointer; color: #ffffff; width: 181px; padding: 15px 10px; background: rgba(24, 31, 30, 0.52); border: 1px solid #4a524e; border-radius: 5px; font-size: 18px; font-family: AlibabaPuHuiTiR; z-index: 111; display: flex; flex-direction: row; justify-content: space-between; align-items: center; } .home-left { position: absolute; top: 18%; left: 40px; width: 41%; height: 76%; font-size: 24px; color: #ffffff; } .unit { font-size: 24px; color: #636363; } .home-left-title { font-size: 24px; color: #ffffff; line-height: 36px; } .home-right { position: absolute; top: 18%; right: 88px; width: 46%; height: 78%; } .model { display: flex; justify-content: center; align-items: center; height: 90%; } #threeContained { width: 100%; height: 100%; } .model-qk-img { width: 82%; height: 90%; background-image: url('../../assets/img/howo.png'); background-size: 100% 100%; background-repeat: no-repeat; } .model-zk-img { width: 56%; height: 90%; background-image: url('../../assets/img/heavyT.png'); background-size: 100% 100%; background-repeat: no-repeat; } .model-gj-img { width: 82%; height: 90%; background-image: url('../../assets/img/transit.png'); background-size: 100% 100%; background-repeat: no-repeat; } .car-online { margin-bottom: 50px; } } .day-data { display: flex; flex-direction: row; justify-content: space-between; align-items: center; height: 29%; margin-left: 30px; } .day-val { width: 40%; } .prefix { display: inline-block; width: 6px; height: 14px; background: #ffffff; margin-right: 20px; } .zh-title { margin-left: 30px; padding-top: 30px; font-size: 30px; font-weight: 700; text-align: left; color: #ffffff; line-height: 32px; letter-spacing: 0.3px; font-family: AlibabaPuHuiTiB; } .en-title { margin-left: 30px; font-size: 14px; font-weight: 400; text-align: left; color: #ffffff; line-height: 32px; letter-spacing: -0.91px; font-family: AlibabaPuHuiTiR; }

Here are some suggestions to optimize the code:

1. Use shorthand properties whenever possible. For example, instead of writing `background-size: 100% 100%;`, you can write `background-size: cover;`.

2. Consolidate similar styles into classes, instead of repeating them for every element. For example, you can create a class for the font family and apply it to all elements that use that font.

3. Remove unnecessary styles that are not being used or overwritten by other styles.

4. Use more specific selectors to target elements, instead of relying on the order of elements in the HTML. This will make the code more robust and easier to maintain.

5. Consider using a CSS preprocessor like Sass or Less, which can help you write cleaner and more organized code.

Here's an example of how the code could be optimized:

.bg {
  width: 100%;
  height: 100vh;
  background: url('../../assets/img/info-bg.png') no-repeat center center / cover;
  position: relative;
  font-family: AlibabaPuHuiTiR;
}

.goBack {
  position: absolute;
  top: 34px;
  right: 65px;
  cursor: pointer;
  color: #fff;
  width: 181px;
  padding: 15px 10px;
  background: rgba(24, 31, 30, 0.52);
  border: 1px solid #4a524e;
  border-radius: 5px;
  font-size: 18px;
  font-family: AlibabaPuHuiTiR;
  z-index: 111;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
}

.home-left {
  position: absolute;
  top: 18%;
  left: 40px;
  width: 41%;
  height: 76%;
  font-size: 24px;
  color: #fff;
}

.unit {
  font-size: 24px;
  color: #636363;
}

.home-left-title {
  font-size: 24px;
  color: #fff;
  line-height: 36px;
}

.home-right {
  position: absolute;
  top: 18%;
  right: 88px;
  width: 46%;
  height: 78%;
}

.model {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 90%;
}

#threeContained {
  width: 100%;
  height: 100%;
}

.model-qk-img {
  width: 82%;
  height: 90%;
  background: url('../../assets/img/howo.png') no-repeat center center / cover;
}

.model-zk-img {
  width: 56%;
  height: 90%;
  background: url('../../assets/img/heavyT.png') no-repeat center center / cover;
}

.model-gj-img {
  width: 82%;
  height: 90%;
  background: url('../../assets/img/transit.png') no-repeat center center / cover;
}

.car-online {
  margin-bottom: 50px;
}

.day-data {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 29%;
  margin-left: 30px;
}

.day-val {
  width: 40%;
}

.prefix {
  display: inline-block;
  width: 6px;
  height: 14px;
  background: #fff;
  margin-right: 20px;
}

.zh-title {
  margin-left: 30px;
  padding-top: 30px;
  font-size: 30px;
  font-weight: 700;
  text-align: left;
  color: #fff;
  line-height: 32px;
  letter-spacing: 0.3px;
  font-family: AlibabaPuHuiTiB;
}

.en-title {
  margin-left: 30px;
  font-size: 14px;
  font-weight: 400;
  text-align: left;
  color: #fff;
  line-height: 32px;
  letter-spacing: -0.91px;
  font-family: AlibabaPuHuiTiR;
}

.font-alibaba {
  font-family: AlibabaPuHuiTiR;
}

.font-alibaba-bold {
  font-family: AlibabaPuHuiTiB;
}

.login { display: flex; justify-content: center; align-items: center; height: 100%; background-color: rgba(184, 153, 90, 0.62); } .login-box { width: 1000px; height: 474.38px; border-radius: 8px; display: flex; } .login-box img { width: 60%; height: auto; } .title { margin: 0px auto 30px auto; text-align: center; color: #707070; } .login-form { background: #fdfdfd; width: 40%; border-radius: 0px 8px 8px 0px; display: flex; justify-content: center; align-items: center; } .login-form .el-form { width: 214px; height: 307px; } .login-form .el-form-item { margin-bottom: 30px; } .login-form .el-form-item.is-error .el-input__inner { border: 0 !important; border-bottom: 1px solid #fd7065 !important; background: #fff !important; } .login-form .input-icon { height: 32px; width: 18px; margin-left: -2px; } .login-form .el-input__inner { border: 0; border-bottom: 1px solid #e9e9e8; border-radius: 0; font-size: 14px; font-weight: 400; color: #333333; height: 32px; line-height: 32px; } .login-form .el-input__prefix { left: 0; } .login-form .el-input--prefix .el-input__inner { padding-left: 26px; } .login-form .el-input__inner::placeholder { color: #aeb5c4; } .login-form .el-form-item--medium .el-form-item__content { line-height: 32px; } .login-form .el-input--medium .el-input__icon { line-height: 32px; } .login-btn { border-radius: 17px; padding: 11px 20px !important; margin-top: 10px; font-weight: 500; font-size: 14px; border: 0; background-color: #ffc200; } .login-btn:hover, .login-btn:focus { /* background: #FFC200; */ /* color: #ffffff; */ } .login-form-title { height: 36px; display: flex; justify-content: center; align-items: center; margin-bottom: 40px; } .login-form-title .title-label { font-weight: 500; font-size: 20px; color: #333333; margin-left: 10px; }

这是一段 CSS 样式代码，用于设置登录页面的样式。其中包括登录框的大小、颜色、输入框的样式、按钮的样式等。它使用了 flex 布局来使页面元素居中对齐，并使用了 border-radius 属性来设置圆角。此外，它还定义了:hover 和:focus 状态下按钮的样式，使用户能够在鼠标悬停或聚焦时获得反馈。