CSS 效果

测试 动画

<div class="notched-rectangle">测试</div>

  .notched-rectangle {
    position: relative;
    width: 300px;
    height: 100px;
    background-color: #3498db;
    margin: 50px auto;
    border: 2px solid #2980b9;
    line-height: 100px;
    text-align: center;
    font-size: 48px;
    font-weight: bold;
    color: #fff;
  }

  .notched-rectangle::before,
  .notched-rectangle::after {
    content: '';
    position: absolute;
    width: 40px;
    height: 40px;
    background-color: #fff;
    border-radius: 50%;
    top: 50%;
    transform: translateY(-50%);
  }

  .notched-rectangle::before {
    left: -22px; /* Adjust for border width */
  }

  .notched-rectangle::after {
    right: -22px; /* Adjust for border width */
  }

Loading 动画

<div class="loading">
    <div></div>
    <div></div>
    <div></div>
</div>
<div class="loader"></div>
<div class="loader1"></div>

/* HTML: <div class="loader"></div> */
.loader1 {
  width: 6px;
  aspect-ratio: 1;
  border-radius: 50%;
  animation: l5 1s infinite linear alternate;
}
@keyframes l5 {
    0%  {box-shadow: 20px 0 #000, -20px 0 #0002;background: #000 }
    33% {box-shadow: 20px 0 #000, -20px 0 #0002;background: #0002}
    66% {box-shadow: 20px 0 #0002,-20px 0 #000; background: #0002}
    100%{box-shadow: 20px 0 #0002,-20px 0 #000; background: #000 }
}
.loader {
  width: 10px;
  aspect-ratio: 4;
  background: radial-gradient(circle closest-side,#000 90%,#0000) 0/calc(100%/3) 100% space;
  clip-path: inset(0 100% 0 0);
  animation: l1 1s steps(4) infinite;
}
@keyframes l1 {to{clip-path: inset(0 -34% 0 0)}}
.loading,
.loading > div {
  position: relative;
  box-sizing: border-box;
}

.loading {
  display: block;
  font-size: 0;
  color: #000;
}

.loading.la-dark {
  color: #333;
}

.loading > div {
  display: inline-block;
  float: none;
  background-color: currentColor;
  border: 0 solid currentColor;
}

.loading {
  width: 54px;
  height: 18px;
}

.loading > div:nth-child(1) {
  animation-delay: -200ms;
}

.loading > div:nth-child(2) {
  animation-delay: -100ms;
}

.loading > div:nth-child(3) {
  animation-delay: 0ms;
}

.loading > div {
  width: 10px;
  height: 10px;
  margin: 4px;
  border-radius: 100%;
  animation: ball-pulse 1s ease infinite;
}

.loading.la-sm {
  width: 26px;
  height: 8px;
}

.loading.la-sm > div {
  width: 4px;
  height: 4px;
  margin: 2px;
}

.loading.la-2x {
  width: 108px;
  height: 36px;
}

.loading.la-2x > div {
  width: 20px;
  height: 20px;
  margin: 8px;
}

.loading.la-3x {
  width: 162px;
  height: 54px;
}

.loading.la-3x > div {
  width: 30px;
  height: 30px;
  margin: 12px;
}

@keyframes ball-pulse {
  0%,
  60%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  30% {
    opacity: 0.1;
    transform: scale(0.01);
  }
}

异型盒子

<div class="box">
  <span>测试</span>
</div>

.box {
  display: flex;
  text-align: center;
  width: 200px;
  height: 50px;
  background: #Ec3dF1;
}
.box span {
  order: 1;
  flex: 1;
  line-height: 50px;
  color: #FFFFFF;
  font-size: 20px;
}
.box::before {
  content: "";
  display: block;
  height: 50px;
  width: 50px;
  border-top-right-radius: 50%;
  background: #FFFFFF;
}
.box::after {
  content: "";
  display: block;
  height: 20px;
  width: 20px;
  align-self: flex-end;
  background-image: radial-gradient(20px at 20px 0px, #Ec3dF1 96.5%, #fff 100%);
}

字体阴影

<div class="box">
  <div class="fontBoxShadow">DINGYONGYA</div>
</div>

.box{
  height: 200px;
  border: 1px #1c1d21 solid;
  border-radius: 5px;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #bbbbbb;
}
.fontBoxShadow{
font-size: 80px;
font-weight: bold;
z-index: 1;
color: #ffffff;
}
 .fontBoxShadow::before{
   content: "DINGYONGYA";
   position: absolute;
   z-index: -1;
      transform: scaleY(0.5) translate(-40px, 33px) skew(50deg);
   color: #000;
   filter: blur(5px);
   -webkit-mask-image: linear-gradient(transparent, #000000);
 }
 

登录按钮特效

<div class="button-box">
  <div class="button">
    <a>登录</a>
  </div>
</div>

.button-box{
  background: #1c1d21;
  height: 100px;
  display: flex;
  justify-content: center;
  align-items: center;
}
 .button{
  height: 50px;
  width: 150px;
  margin: 0 auto;
  position: relative;
  cursor: pointer;
}
.button a{
  background: rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 30px;
  box-shadow: 0 15px 35px rgba(255, 255, 255, 0.2);
  color: #ffffff;
  display: flex;
  position: absolute;
  font-size: 18px;
  font-weight: 700;
  left: 0;
  top: 0;
  height: 100%;
  width: 100%;
  justify-content: center;
  letter-spacing: 1px;
  overflow: hidden;
  backdrop-filter: blur(15px);
  z-index: 1;
  transition: 0.5s;
  align-items: center;
  text-decoration: none;
}
 .button a::after{
   content: '';
   position: absolute;
   top: 0;
   left: 0;
   width: 50%;
   height: 100%;
   background: linear-gradient(to left,rgba(255, 255, 255, 0.15), transparent);
   transform: skew(45deg) translateX(0);
   transition: 0.5s;
 }
.button:hover a::after{
  transform: skew(45deg) translateX(200%);
}

.button::before{
    content: '';
    position: absolute;
    left: 50%;
    top: 32px;
    height: 10px;
    width: 0;
    background: #f00;
    transform: translateX(-50%);
    border-radius: 10px;
    transition: 0.5s;
    transition-delay: 0s;
}
.button:hover::before{
    top: 27px;
    height: 50%;
    width: 80%;
    border-radius: 30px;
    transition-delay: 0.5s;
}
.button::after{
 content: '';
 position: absolute;
  left: 50%;
  top: 0px;
  height: 10px;
  width: 0;
  background: #f00;
  transform: translateX(-50%);
  border-radius: 10px;
  transition: 0.5s;
  transition-delay: 0s;
}
.button:hover::after{
  top: 0;
  height: 50%;
  width: 80%;
  border-radius: 30px;
  transition-delay: 0.5s;
}
.button::before, .button::after{
  background: #fc2f70;
  box-shadow: 0 0 5px #fc2f70, 0 0 15px #fc2f70, 0 0 30px #fc2f70, 0 0 60px #fc2f70;
}
.button:active a{
  color: #000;
}