SVG 线性渐变

横向线性渐变

<svg height="150" width="400" xmlns="http://www.w3.org/2000/svg">
  <defs>
    <linearGradient id="grad1" x1="0%" x2="100%" y1="0%" y2="0%">
      <stop offset="0%" stop-color="yellow" />
      <stop offset="100%" stop-color="red" />
    </linearGradient>
  </defs>
  <ellipse cx="100" cy="70" rx="85" ry="55" fill="url(#grad1)" />
</svg>

<svg height="150" width="400" xmlns="http://www.w3.org/2000/svg">
  <defs>
    <linearGradient id="grad2" x1="0%" x2="100%" y1="0%" y2="0%">
      <stop offset="0%" stop-color="yellow" />
      <stop offset="50%" stop-color="green" />
      <stop offset="100%" stop-color="red" />
    </linearGradient>
  </defs>
  <ellipse cx="100" cy="70" rx="85" ry="55" fill="url(#grad2)" />
</svg>

纵向线性渐变

<svg height="150" width="400" xmlns="http://www.w3.org/2000/svg">
  <defs>
    <linearGradient id="grad3" x1="0%" y1="0%" x2="0%" y2="100%">
      <stop offset="0%" stop-color="yellow" />
      <stop offset="100%" stop-color="red" />
    </linearGradient>
  </defs>
  <ellipse cx="100" cy="70" rx="85" ry="55" fill="url(#grad3)" />
</svg>

带文本的横向线性渐变

<svg height="150" width="400" xmlns="http://www.w3.org/2000/svg">
  <defs>
    <linearGradient id="grad4" x1="0%" y1="0%" x2="100%" y2="0%">
      <stop offset="0%" stop-color="yellow" />
      <stop offset="100%" stop-color="red" />
    </linearGradient>
  </defs>
  <ellipse cx="100" cy="70" rx="85" ry="55" fill="url(#grad4)" />
  <text fill="#ffffff" font-size="45" font-family="Verdana" x="50" y="86">SVG</text>
</svg>

角度渐变

<svg height="150" width="400" xmlns="http://www.w3.org/2000/svg">
  <defs>
    <linearGradient id="grad5" x1="0%" y1="100%" x2="100%" y2="0%">
      <stop offset="0%" stop-color="yellow" />
      <stop offset="100%" stop-color="red" />
    </linearGradient>
  </defs>
  <ellipse cx="100" cy="70" rx="85" ry="55" fill="url(#grad5)" />
</svg>