如何根据规格使背景图像响应

Question

有Zeplin的要求，我需要在屏幕左侧显示一幅图像并使其具有响应能力，到目前为止，我未能使其具有响应能力，因此我需要在正确方向上提供一些帮助 我将为自己成功做过一幅画。

我将粘贴CSS的代码

.sign-in-image {
  width: 40%;
  height: 100vh;
  float: left;
  border: solid 1px #979797;
  background-repeat: no-repeat;
  background-size: contain;

我的注册反应代码

const SignIn = () => (
<div className="sign-in">
    <div className="image-container">
        <div className="sign-in-image" style={{ backgroundImage: `url(${signin})` }} src = {signin} alt="logo" />
    </div>
    <div className="right">
        <input  className='textField' placeholder="Username" />
        <input  className='textField' placeholder="Password" />
        <button type="button" className='signIn'>sign in</button>
        <p className='forgot'>Forgot username or password</p>
        <p className='signUp'>Don’t have an account? Sign up</p>
    </div>  
</div>
)

export default SignIn;

css文件

.sign-in-image {
  width: 40%;
  height: 100vh;
  float: left;
  border: solid 1px #979797;
  background-repeat: no-repeat;
  background-size: cover;
}

.right{
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100vh;

}

.textField{
  height: 47px;
  width: 600px;
  outline: 0;
  border-width: 0 0 2px;
  border-color: #f1f1f1;
  margin-top: 44px;
  text-align: center;
  border-bottom:thin dashed grey;


}

.textField::placeholder{
  width: 600px;
  height: 47px;
}

.signIn{
  width: 100px;
  height: 48px;
  border-radius: 24px;
  background-color: #f1316b;
  color: #fff;
  margin-top: 45px;
  border: 0;
}

.forgot{
  font-size: 18px;
  font-weight: normal;
  font-stretch: normal;
  font-style: italic;
  line-height: normal;
  letter-spacing: normal;
  color: #2e1150;
  font-family: 'Nunito';
  margin-top: 60px;
  width: 241px;
  height: 24px;
}

.signUp{
  font-size: 20px;
  font-weight: normal;
  font-stretch: normal;
  font-style: normal;
  line-height: normal;
  letter-spacing: normal;
  color: #2e1150;
  margin-top: 187px;
}


@media only screen and (max-width: 768px){
  .sign-in-image {
    width: 60%;
    height: 100vh;
  }
}

@media only screen and (max-width: 640px){
  .sign-in-image {
    width: 60%;
    height: 100vh;
  }
}

我希望有人可以引导我朝正确的方向做出回应，而不会被图片吞噬 谢谢

Answer 1

您可以使用媒体查询：

/* Extra small devices (phones, 600px and down) */
@media only screen and (max-width: 600px) {...}

/* Small devices (portrait tablets and large phones, 600px and up) */
@media only screen and (min-width: 600px) {...}

/* Medium devices (landscape tablets, 768px and up) */
@media only screen and (min-width: 768px) {...}

/* Large devices (laptops/desktops, 992px and up) */
@media only screen and (min-width: 992px) {...}

/* Extra large devices (large laptops and desktops, 1200px and up) */
@media only screen and (min-width: 1200px) {...}

为相应的设备或宽度相应地应用css。