Make colab.research.google.com beautiful

beautiful_google-colab.css

div.inputarea.horizontal.layout.code {
  border-radius: 10px !important;
}

.main-content[elevation="2"] {
    border-radius: 10px  !important;

}

.code.focused .cell-gutter {
    border-radius: 10px;
}

.main-content[elevation="2"] {
    border-radius: 10px !important;
    box-shadow: 0 3px 15px 0 rgb(0 0 100 / 5%), 0 1px 15px -5px rgb(0 0 100 / 12%), 0 2px 5px -1px rgb(0 0 100 / 21%);

}

paper-toast.message-area.hidden-if-exported-html.paper-toast-open {
  display: none;
}

inputarea {
    border-radius: 10px;
}

div.markdown-toolbar {
  border-radius: 10px 10px 0 0;
}